MISCELLANEOUS

(iLoveNuclear.com)

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

Daughter Isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

1H

1

0

7000100782503224000♠1.00782503224(9)

Stable

​1⁄2+

6999999885000000000♠0.999885(70)

6999999816000000000♠0.999816–6999999974000000000♠0.999974

2H (D)

1

1

7000201410177811000♠2.01410177811(12)

Stable

1+

6996115000000000000♠0.000115(70)

6995259999999999999♠0.000026–6996184000000000000♠0.000184

3H (T)

1

2

7000301604928199000♠3.01604928199(23)

7008388789632000000♠12.32(2) y

β−

3He

​1⁄2+

Trace

4H

1

3

7000402643000000000♠4.02643(11)

6978139000000000000♠1.39(10)×10−22 s
[6987737001184020000♠4.6(9) MeV]

n

3H

2−

5H

1

4

7000503531000000000♠5.03531(10)

>6978910000000000000♠9.1×10−22 s

2n

3H

(​1⁄2+)

6H

1

5

7000604496000000000♠6.04496(27)

6978290000000000000♠2.90(70)×10−22 s
[6987256348237920000♠1.6(4) MeV]

3n

3H

2−

4n

2H

7H

1

6

7000705275000000000♠7.05275(108)

6977229999999999999♠2.3(6)×10−23 s

4n

3H

​1⁄2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

2 He

2

0

2.015894(2)

≪ 10−9 s

p (>99.99%)

2 1H

0+()

β+ (<0.01%)

2 H

3He

2

1

3.0160293191(26)

Stable

1/2+

1.34(3)×10−6

4.6×10−10−4.1×10−5

4He

2

2

4.00260325415(6)

Stable

0+

0.99999866(3)

0.999959-1

5He

2

3

5.01222(5)

700(30)×10−24 s

n

4He

3/2−

6He

2

4

6.0188891(8)

806.7(15) ms

β− (99.99%)

6Li

0+

β−, α (2.8×10−4%)

4He, 2H

7He

2

5

7.028021(18)

2.9(5)×10−21 s
[159(28) keV]

n

6He

(3/2)−

8He

2

6

8.033922(7)

119.0(15) ms

β− (83.1%)

8Li

0+

β−,n (16.0%)

7Li

β−, fission (0.9%)

5He
, 3H

9He

2

7

9.04395(3)

7(4)×10−21 s

n

8He

1/2−()

10He

2

8

10.05240(8)

2.7(18)×10−21 s

2n

8He

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

4Li

3

1

7000402719000000000♠4.02719(23)

6977909999999999999♠91(9)×10−24 s
[6987966112421661000♠6.03 MeV]

p

3He

5Li

3

2

7000501254000000000♠5.01254(5)

6978370000000000000♠370(30)×10−24 s
[~6987240326473050000♠1.5 MeV]

p

4He

3/2−

6Li

3

3

7000601512279500000♠6.015122795(16)

Stable

1+

[6998759000000000000♠0.0759(4)]

6998722500000000000♠0.07225–6998771400000000000♠0.07714

7Li

3

4

7000701600343660000♠7.0160034366(45)

Stable

3/2−

[6999924100000000000♠0.9241(4)]

6999922750000000000♠0.92275–6999927860000000000♠0.92786

8Li

3

5

7000802248736000000♠8.02248736(10)

6999840299999999999♠840.3(9) ms

β−

8Be

2+

9Li

3

6

7000902678950000000♠9.0267895(21)

6999178300000000000♠178.3(4) ms

β−, n (50.8%)

8Be

3/2−

β− (49.2%)

9Be

10Li

3

7

7001100354810000000♠10.035481(16)

6979199999999999999♠2.0(5)×10−21 s
[6987192261178440000♠1.2(3) MeV]

n

9Li

(1−,2−)

10m1Li

6986320435297400000♠200(40) keV

6979370000000000000♠3.7(15)×10−21 s

1+

10m2Li

6986769044713760000♠480(40) keV

6979135000000000000♠1.35(24)×10−21 s

2+

11Li

3

8

7001110437980000000♠11.043798(21)

6997875000000000000♠8.75(14) ms

β−, n (84.9%)

10Be

3/2−

β− (8.07%)

11Be

β−, 2n (4.1%)

9Be

β−, 3n (1.9%)

8Be

β−, α (1.0%)

7He, 4He

β−, fission (.014%)

8Li, 3H

β−, fission (.013%)

9Li, 2H

12Li

3

9

7001120537800000000♠12.05378(107)

<6992100000000000000♠10 ns

n

11Li

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

5Be

4

1

5.04079(429)

p

4Li

(1/2+)

6Be

4

2

6.019726(6)

5.0(3)×10−21 s
[0.092(6) MeV]

2p

4He

0+

7Be

4

3

7.01692983(11)

53.22(6) d

EC

7Li

3/2−

Trace

8Be

4

4

8.00530510(4)

6.7(17)×10−17 s
[6.8(17) eV]

α

4He

0+

9Be

4

5

9.0121822(4)

Stable

3/2−

1.0000

10Be

4

6

10.0135338(4)

1.39×106 years

β−

10B

0+

Trace

11Be

4

7

11.021658(7)

13.81(8) s

β− (97.1%)

11B

1/2+

β−, α (2.9%)

7Li

12Be

4

8

12.026921(16)

21.49(3) ms

β− (99.48%)

12B

0+

β−, n (0.52%)

11B

13Be

4

9

13.03569(8)

2.7×10−21 s

n

12Be

1/2+

14Be

4

10

14.04289(14)

4.84(10) ms

β−, n (81.0%)

13B

0+

β− (14.0%)

14B

β−, 2n (5.0%)

12B

15Be

4

11

15.05346(54)

7.86×10−22 s
[0.58 MeV]

n

14Be

(5/2+)

16Be

4

12

16.06192(54)

5.7×10−22 s
[0.8 MeV]

2n

14Be

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life
[resonance width]

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole percent)

6B

5

 1

 6.04681(75)

7B

5

 2

 7.02992(8)

350(50) × 10−24 s
[1.4(2) MeV]

p

6Be

(3/2−)

8B

5

 3

 8.0246072(11)

770(3) ms

β+, α

2 4He

2+

9B

5

 4

 9.0133288(11)

80(30) × 10−21 s
[0.54(21) keV]

p, α

8Be

​3⁄2−

10B

5

 5

10.0129370(4)

Stable

3+

0.199(7)

18.929–20.386

11B

5

 6

11.0093054(4)

Stable

3/2−

0.801(7)

79.614–81.071

12B

5

 7

12.0143521(15)

20.20(2) ms

β− (98.4%)

12C

1+

β−, α (1.6%)

8Be

13B

5

 8

13.0177802(12)

17.33(17) ms

β− (99.72%)

13C

3/2−

β−, n (0.279%)

12C

14B

5

 9

14.025404(23)

12.5(5) ms

β− (93.96%)

14C

2−

β−, n (6.04%)

13C

15B

5

10

15.031103(24)

 9.87(7) ms

β−, n (93.6%)

14C

3/2−

β− (6.0%)

15C

β−, 2n (0.40%)

13C

16B

5

11

16.03981(6)

< 190 × 10−12 s
[< 0.1 MeV]

n

15B

0−

17B

5

12

17.04699(18)

 5.08(5) ms

β−, n (63.0%)

16C

(3/2−)

β− (22.1%)

17C

β−, 2n (11.0%)

15C

β−, 3n (3.5%)

14C

β−, 4n (0.40%)

13C

18B

5

13

18.05617(86)

< 26 ns

n

17B

(4−)

19B

5

14

19.06373(43)

 2.92(13) ms

β−

19C

(3/2−)

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

8C

6

2

8.037675(25)

2.0(4) × 10−21 s
[230(50) keV]

2p

6Be

0+

9C

6

3

9.0310367(23)

126.5(9) ms

β+ (60%)

9B

(3/2−)

β+, p (23%)

8Be

β+, α (17%)

5Li

10C

6

4

10.0168532(4)

19.290(12) s

β+

10B

0+

11C

6

5

11.0114336(10)

20.334(24) min

β+ (99.79%)

11B

3/2−

EC (0.21%)

11B

12C

6

6

12 exactly

Stable

0+

0.9893(8)

0.98853–0.99037

13C

6

7

13.0033548378(10)

Stable

1/2−

0.0107(8)

0.00963–0.01147

14C

6

8

14.003241989(4)

5,730 years

β−

14N

0+

Trace

<10−12

15C

6

9

15.0105993(9)

2.449(5) s

β−

15N

1/2+

16C

6

10

16.014701(4)

0.747(8) s

β−, n (97.9%)

15N

0+

β− (2.1%)

16N

17C

6

11

17.022586(19)

193(5) ms

β− (71.59%)

17N

(3/2+)

β−, n (28.41%)

16N

18C

6

12

18.02676(3)

92(2) ms

β− (68.5%)

18N

0+

β−, n (31.5%)

17N

19C

6

13

19.03481(11)

46.2(23) ms

β−, n (47.0%)

18N

(1/2+)

β− (46.0%)

19N

β−, 2n (7%)

17N

20C

6

14

20.04032(26)

16(3) ms
[14(+6-5) ms]

β−, n (72.0%)

19N

0+

β− (28.0%)

20N

21C

6

15

21.04934(54)

<30 ns

n

20C

(1/2+)

22C

6

16

22.05720(97)

6.2(13) ms
[6.1(+14-12) ms]

β−

22N

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

10N

7

3

10.04165(43)

200(140)×10−24 s
[2.3(16) MeV]

p

9C

(2−)

11N

7

4

11.02609(5)

590(210)×10−24 s
[1.58(+75−52) MeV]

p

10C

1/2+

11mN

740(60) keV

6.90(80)×10−22 s

1/2−

12N

7

5

12.0186132(11)

11.000(16) ms

β+ (96.5%)

12C

1+

β+, α (3.5%)

8Be

13N

7

6

13.00573861(29)

9.965(4) min

β+

13C

1/2−

14N

7

7

14.0030740048(6)

Stable

1+

0.99636(20)

0.99579–0.99654

15N

7

8

15.0001088982(7)

Stable

1/2−

0.00364(20)

0.00346–0.00421

16N

7

9

16.0061017(28)

7.13(2) s

β− (99.99%)

16O

2−

β−, α (.001%)

12C

17N

7

10

17.008450(16)

4.173(4) s

β−, n (95.0%)

16O

1/2−

β− (4.99%)

17O

β−, α (.0025%)

13C

18N

7

11

18.014079(20)

622(9) ms

β− (76.9%)

18O

1−

β−, α (12.2%)

14C

β−, n (10.9%)

17O

19N

7

12

19.017029(18)

271(8) ms

β−, n (54.6%)

18O

(1/2−)

β− (45.4%)

19O

20N

7

13

20.02337(6)

130(7) ms

β−, n (56.99%)

19O

β− (43.00%)

20O

21N

7

14

21.02711(10)

87(6) ms

β−, n (80.0%)

20O

1/2−

β− (20.0%)

21O

22N

7

15

22.03439(21)

13.9(14) ms

β− (65.0%)

22O

β−, n (35.0%)

21O

23N

7

16

23.04122(32)

14.5(24) ms
[14.1(+12−15) ms]

β−

23O

1/2−

24N

7

17

24.05104(43)

<52 ns

n

23N

25N

7

18

25.06066(54)

<260 ns

1/2−

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

12O

8

4

12.034405(20)

580(30)×10−24 s
[0.40(25) MeV]

2p (60.0%)

10C

0+

p (40.0%)

11N

13O

8

5

13.024812(10)

8.58(5) ms

β+ (89.1%)

13N

(3/2−)

β+, p (10.9%)

12C

14O

8

6

14.00859625(12)

70.598(18) s

β+

14N

0+

15O

8

7

15.0030656(5)

122.24(16) s

β+

15N

1/2−

16O

8

8

15.99491461956(16)

Stable

0+

0.99757(16)

0.99738–0.99776

17O

8

9

16.99913170(12)

Stable

5/2+

3.8(1)×10−4

3.7×10−4–4.0×10−4

18O

8

10

17.9991610(7)

Stable

0+

2.05(14)×10−3

1.88×10−3–2.22×10−3

19O

8

11

19.003580(3)

26.464(9) s

β−

19F

5/2+

20O

8

12

20.0040767(12)

13.51(5) s

β−

20F

0+

21O

8

13

21.008656(13)

3.42(10) s

β−

21F

(1/2,3/2,5/2)+

22O

8

14

22.00997(6)

2.25(15) s

β− (78.0%)

22F

0+

β−, n (22.0%)

21F

23O

8

15

23.01569(13)

82(37) ms

β−, n (57.99%)

22F

1/2+

β− (42.0%)

23F

24O

8

16

24.02047(25)

65(5) ms

β−, n (57.99%)

23F

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

14F

9

5

14.03506(43)

5×10−22 s
[910 keV]

p

13O

2-

15F

9

6

15.01801(14)

410(60)×10−22 s
[1.0(2) MeV]

p

14O

(1/2+)

16F

9

7

16.011466(9)

11(6)×10−21 s
[40(20) keV]

p

15O

0−

17F

9

8

17.00209524(27)

64.49(16) s

β+

17O

5/2+

18F

9

9

18.0009380(6)

109.771(20) min

β+

18O

1+

18mF

1121.36(15) keV

162(7) ns

IT

18F

5+

19F

9

10

18.99840322(7)

Stable

1/2+

1.0000

20F

9

11

19.99998132(8)

11.163(8) s

β−

20Ne

2+

21F

9

12

20.9999490(19)

4.158(20) s

β−

21Ne

5/2+

22F

9

13

22.002999(13)

4.23(4) s

β− (89.0%)

22Ne

4+,(3+)

β−n (11.0%)

21Ne

23F

9

14

23.00357(9)

2.23(14) s

β− (86.0%)

23Ne

5/2+

β−n (14.0%)

22Ne

24F

9

15

24.00812(8)

400(50) ms

β− (94.1%)

24Ne

(1,2,3)+

β−n (5.9%)

23Ne

25F

9

16

25.01210(11)

50(6) ms

β− (76.0%)

25Ne

(5/2+)

β−n (24.0%)

24Ne

26F

9

17

26.01962(18)

9.6(8) ms

β− (68.0%)

26Ne

1+

β−n (32.0%)

25Ne

26mF

643.4(1) keV

2.2(1) ms

IT (82±11 %)

26F

(4+)

β−n (12±8 %)

25Ne

27F

9

18

27.02676(40)

4.9(2) ms

β−

27Ne

5/2+

28F

9

19

28.03567(55)

<40 ns

n

27F

29F

9

20

29.04326(62)

2.6(3) ms

β−

29Ne

5/2+

30F

9

21

30.05250(64)

<260 ns

31F

9

22

31.06043(64)

1 ms [>260 ns]

5/2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

16Ne

10

6

16.025761(22)

9×10−21 s
[122(37) keV]

2p

14O

0+

17Ne

10

7

17.017672(29)

109.2(6) ms

β+, p (96.0%)

16O

1/2–

β+, α (2.7%)

13N

β+ (1.3%)

17F

18Ne

10

8

18.0057082(3)

1.672(8) s

β+

18F

0+

2p (possibly 2He)

16O

19Ne

10

9

19.0018802(3)

17.296(5) s+

β+

19F

1/2+

20Ne

10

10

19.9924401754(19)

Stable

0+

0.9048(3)

0.8847–0.9051

21Ne

10

11

20.99384668(4)

Stable

3/2+

0.0027(1)

0.0027–0.0171

22Ne

10

12

21.991385114(19)

Stable

0+

0.0925(3)

0.0920–0.0996

23Ne

10

13

22.99446690(11)

37.24(12) s

β−

23Na

5/2+

24Ne

10

14

23.9936108(4)

3.38(2) min

β−

24Na

0+

25Ne

10

15

24.997737(28)

602(8) ms

β−

25Na

(3/2)+

26Ne

10

16

26.000461(29)

197(1) ms

β− (99.87%)

26Na

0+

β−, n (.13%)

25Na

27Ne

10

17

27.00759(12)

32(2) ms

β− (98.0%)

27Na

(3/2+)

β−, n (2.0%)

26Na

28Ne

10

18

28.01207(16)

18.3(22) ms

β− (78.0%)

28Na

0+

β−, n (22.0%)

27Na

29Ne

10

19

29.01939(29)

15.6(5) ms

β−

29Na

(3/2+)

30Ne

10

20

30.02480(61)

5.8(2) ms

β−

30Na

0+

31Ne

10

21

31.03311(97)

3.4(8) ms

β−

31Na

7/2−

β−, n

30Na

32Ne

10

22

32.04002(86)

3.5(9) ms

β−, n

31Na

0+

β−

32Na

33Ne

10

23

33.04938(86)

<260 ns

7/2−

34Ne

10

24

34.05703(87)

1 ms [>1.5 µs]

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

18Na

11

7

7001180259700000000♠18.02597(5)

6979129999999999999♠1.3(4)×10−21 s

p (>99.9%)

17Ne

(1−)

β+ (<.1%)

18Ne

19Na

11

8

7001190138770000000♠19.013877(13)

<40 ns

p

18Ne

(5/2+)

20Na

11

9

7001200073510000000♠20.007351(7)

447.9(23) ms

β+ (75%)

20Ne

2+

β+, α (25%)

16O

21Na

11

10

7001209976552000000♠20.9976552(8)

22.49(4) s

β+

21Ne

3/2+

22Na

11

11

7001219944364000000♠21.9944364(4)

2.6027(10) y

β+

22Ne

3+

Trace

22mNa

583.03(9) keV

244(6) ns

1+

23Na

11

12

7001229897692809000♠22.9897692809(29)

Stable

3/2+

7000100000000000000♠1.0000

24Na

11

13

7001239909627800000♠23.99096278(8)

7004538524000000000♠14.9590(12) h

β−

24Mg

4+

Trace

24mNa

472.207(9) keV

20.20(7) ms

IT (99.95%)

24Na

1+

β− (.05%)

24Mg

25Na

11

14

7001249899540000000♠24.9899540(13)

59.1(6) s

β−

25Mg

5/2+

26Na

11

15

7001259926330000000♠25.992633(6)

1.077(5) s

β−

26Mg

3+

27Na

11

16

7001269940770000000♠26.994077(4)

301(6) ms

β− (99.87%)

27Mg

5/2+

β−, n (.13%)

26Mg

28Na

11

17

7001279989380000000♠27.998938(14)

30.5(4) ms

β− (99.421%)

28Mg

1+

β−, n (.579%)

27Mg

29Na

11

18

7001290028610000000♠29.002861(14)

44.9(12) ms

β− (74.09%)

29Mg

3/2(+)

β−, n (25.91%)

28Mg

30Na

11

19

7001300089760000000♠30.008976(27)

48.4(17) ms

β− (68.83%)

30Mg

2+

β−, n (30.0%)

29Mg

β−, 2n (1.17%)

28Mg

β−, α

26Ne

31Na

11

20

7001310135900000000♠31.01359(23)

17.0(4) ms

β− (62.05%)

31Mg

(3/2+)

β−, n

30Mg

β−, 2n

29Mg

β−, 3n

28Mg

32Na

11

21

7001320204700000000♠32.02047(38)

12.9(7) ms

β−

32Mg

(3−,4−)

β−, n

31Mg

β−, 2n

30Mg

33Na

11

22

7001330267200000000♠33.02672(94)

8.2(2) ms

β−, n (52.0%)

32Mg

3/2+

β− (36.0%)

33Mg

β−, 2n (12.0%)

31Mg

34Na

11

23

7001340351700000000♠34.03517(96)

5.5(10) ms

β−, 2n (50.0%)

32Mg

1+

β− (35.0%)

34Mg

β−, n (15.0%)

33Mg

35Na

11

24

7001350424900000000♠35.04249(102)

1.5(5) ms

β− (>99.9%)

35Mg

3/2+

β−, n (<.1%)

34Mg

36Na

11

25

36.05148(102)

<260 ns

37Na

11

26

37.05934(103)

1 ms [>1.5 µs]

3/2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

19Mg

12

7

19.03547(27)

4×10−12 s

2p

17Ne

1/2−

20Mg

12

8

20.018863(29)

90.8(24) ms

β+ (97%)

20Na

0+

β+, p (3%)

19Ne

21Mg

12

9

21.011713(18)

122(2) ms

β+ (66.9%)

21Na

(5/2,3/2)+

β+, p (32.6%)

20Ne

β+, α (0.5%)

17F

22Mg

12

10

21.9995738(14)

3.8755(12) s

β+

22Na

0+

23Mg

12

11

22.9941237(14)

11.317(11) s

β+

23Na

3/2+

24Mg

12

12

23.985041700(14)

Stable

0+

0.7899(4)

0.78958–0.79017

25Mg

12

13

24.98583692(3)

Stable

5/2+

0.1000(1)

0.09996–0.10012

26Mg

12

14

25.982592929(30)

Stable

0+

0.1101(3)

0.10987–0.11030

27Mg

12

15

26.98434059(5)

9.458(12) min

β−

27Al

1/2+

28Mg

12

16

27.9838768(22)

20.915(9) h

β−

28Al

0+

29Mg

12

17

28.988600(15)

1.30(12) s

β−

29Al

3/2+

30Mg

12

18

29.990434(9)

335(17) ms

β− (99.94%)

30Al

0+

β−, n (.06%)

29Al

31Mg

12

19

30.996546(13)

230(20) ms

β− (98.3%)

31Al

1/2+

β−, n (1.7%)

30Al

32Mg

12

20

31.998975(19)

86(5) ms

β− (97.6%)

32Al

0+

β−, n (2.4%)

31Al

33Mg

12

21

33.005254(21)

90.5(16) ms

β− (83%)

33Al

3/2−

β−, n (17%)

32Al

34Mg

12

22

34.00946(25)

20(10) ms

β− (>99.9%)

34Al

0+

β−, n (<.1%)

33Al

35Mg

12

23

35.01734(43)

70(40) ms

β−, n (52%)

34Al

(7/2−)

β− (48%)

35Al

36Mg

12

24

36.02300(54)

3.9(13) ms

β−

36Al

0+

37Mg

12

25

37.03140(97)

40 ms [>260 ns]

β−

37Al

7/2−

β−, n

36Al

38Mg

12

26

38.03757(54)

1 ms [>260 ns]

0+

39Mg

12

27

39.04677(55)

<260 ns

7/2−

40Mg

12

28

40.05393(97)

1 ms

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

19Al

13

6

19.0218

<35 ns

p

18Mg

20Al

13

7

20.0194

<35 ns

p

19Mg

21Al

13

8

21.02804(32)

<35 ns

p

20Mg

1/2+

22Al

13

9

22.01952(10)

59(3) ms

β+ (96.7%)

22Mg

(3)+

β+, 2p (2.5%)

20Ne

β+, p (0.8%)

21Na

23Al

13

10

23.007267(20)

470(30) ms

β+ (92%)

23Mg

5/2+

β+, p (8%)

22Na

23mAl

~0.35 s

79

24Al

13

11

23.9999389(30)

2.053(4) s

β+ (99.95%)

24Mg

4+

β+, α (.0349%)

20Ne

β+, p (.0159%)

23Na

24mAl

425.8(1) keV

131.3(25) ms

IT (82%)

24Al

1+

β+ (18%)

24Mg

β+, α

20Ne

25Al

13

12

24.9904281(5)

7.183(12) s

β+

25Mg

5/2+

26Al

13

13

25.98689169(6)

7.17(24)×105 years

β+

26Mg

5+

Trace

26mAl

228.305(13) keV

6.3452(19) s

β+

26Mg

0+

27Al

13

14

26.98153863(12)

Stable

5/2+

1.0000

28Al

13

15

27.98191031(14)

2.2414(12) min

β−

28Si

3+

29Al

13

16

28.9804450(13)

6.56(6) min

β−

29Si

5/2+

30Al

13

17

29.982960(15)

3.60(6) s

β−

30Si

3+

31Al

13

18

30.983947(22)

644(25) ms

β− (98.4%)

31Si

(3/2,5/2)+

β−, n (1.6%)

30Si

32Al

13

19

31.98812(9)

31.7(8) ms

β− (99.3%)

32Si

1+

β−, n (.7%)

31Si

32mAl

955.7(4) keV

200(20) ns

(4+)

33Al

13

20

32.99084(8)

41.7(2) ms

β− (91.5%)

33Si

(5/2+)

β−, n (8.5%)

32Si

34Al

13

21

33.99685(12)

56.3(5) ms

β− (87.5%)

34Si

4−

β−, n (12.5%)

33Si

35Al

13

22

34.99986(19)

38.6(4) ms

β− (74%)

35Si

5/2+

β−, n (26%)

34Si

36Al

13

23

36.00621(23)

90(40) ms

β− (69%)

36Si

β−, n (31%)

35Si

37Al

13

24

37.01068(36)

10.7(13) ms

β−

37Si

3/2+

38Al

13

25

38.01723(78)

7.6(6) ms

β−

38Si

39Al

13

26

39.02297(158)

7.6(16) ms

β−

39Si

3/2+

40Al

13

27

40.03145(75)

10 ms [>260 ns]

41Al

13

28

41.03833(86)

2 ms [>260 ns]

3/2+

42Al

13

29

42.04689(97)

1 ms

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

22Si

14

8

22.03453(22)

29(2) ms

β+ (68%)

22Al

0+

β+, p (32%)

21Mg

23Si

14

9

23.02552(21)

42.3(4) ms

β+

23Al

3/2+

24Si

14

10

24.011546(21)

140(8) ms

β+ (92%)

24Al

0+

β+, p (8%)

23Mg

25Si

14

11

25.004106(11)

220(3) ms

β+ (63.19%)

25Al

5/2+

β+, p (36.8%)

24Mg

26Si

14

12

25.992330(3)

2.234(13) s

β+

26Al

0+

27Si

14

13

26.98670491(16)

4.16(2) s

β+

27Al

5/2+

28Si

14

14

27.9769265325(19)

Stable

0+

0.92223(19)

0.92205–0.92241

29Si

14

15

28.976494700(22)

Stable

1/2+

0.04685(8)

0.04678–0.04692

30Si

14

16

29.97377017(3)

Stable

0+

0.03092(11)

0.03082–0.03102

31Si

14

17

30.97536323(4)

157.3(3) min

β−

31P

3/2+

32Si

14

18

31.97414808(5)

153(19) y

β−

32P

0+

trace

cosmogenic

33Si

14

19

32.978000(17)

6.18(18) s

β−

33P

(3/2+)

34Si

14

20

33.978576(15)

2.77(20) s

β−

34P

0+

35Si

14

21

34.98458(4)

780(120) ms

β− (94.74%)

35P

7/2−

β−, n (5.26%)

34P

36Si

14

22

35.98660(13)

0.45(6) s

β− (88%)

36P

0+

β−, n (12%)

35P

37Si

14

23

36.99294(18)

90(60) ms

β− (83%)

37P

(7/2−)

β−, n (17%)

36P

38Si

14

24

37.99563(15)

90 ms [>1 µs]

β−, n

37P

0+

β−

38P

39Si

14

25

39.00207(36)

47.5(20) ms

β−

39P

7/2−

40Si

14

26

40.00587(60)

33.0(10) ms

β−

40P

0+

41Si

14

27

41.01456(198)

20.0(25) ms

β−

41P

7/2−

42Si

14

28

42.01979(54)

13(4) ms

β−

42P

0+

43Si

14

29

43.02866(75)

15 ms [>260 ns]

3/2−

44Si

14

30

44.03526(86)

10 ms

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

24P

15

9

24.03435(54)

?

p (>99.9%)

23Si

(1+)

β+ (<.1%)

24Si

25P

15

10

25.02026(21)

<30 ns

p

24Si

(1/2+)

26P

15

11

26.01178(21)

43.7(6) ms

β+ (98.1%)

26Si

(3+)

β+, 2p (1.0%)

24Mg

β+, p (.9%)

25Al

27P

15

12

26.999230(28)

260(80) ms

β+ (99.93%)

27Si

1/2+

β+, p (.07%)

26Al

28P

15

13

27.992315(4)

270.3(5) ms

β+ (99.99%)

28Si

3+

β+, p (.0013%)

27Al

β+, α (8.6×10−4%)

24Mg

29P

15

14

28.9818006(6)

4.142(15) s

β+

29Si

1/2+

30P

15

15

29.9783138(3)

2.498(4) min

β+

30Si

1+

31P

15

16

30.97376163(20)

Stable

1/2+

1.0000

32P

15

17

31.97390727(20)

14.263(3) d

β−

32S

1+

trace

33P

15

18

32.9717255(12)

25.34(12) d

β−

33S

1/2+

34P

15

19

33.973636(5)

12.43(8) s

β−

34S

1+

35P

15

20

34.9733141(20)

47.3(7) s

β−

35S

1/2+

36P

15

21

35.978260(14)

5.6(3) s

β−

36S

4−

37P

15

22

36.97961(4)

2.31(13) s

β−

37S

1/2+

38P

15

23

37.98416(11)

0.64(14) s

β− (88%)

38S

β−, n (12%)

37S

39P

15

24

38.98618(11)

190(50) ms

β− (74%)

39S

1/2+

β−, n (26%)

38S

40P

15

25

39.99130(15)

153(8) ms

β− (70%)

40S

(2−,3−)

β−, n (30%)

39S

41P

15

26

40.99434(23)

100(5) ms

β− (70%)

41S

1/2+

β−, n (30%)

40S

42P

15

27

42.00101(48)

48.5(15) ms

β− (50%)

42S

β−, n (50%)

41S

43P

15

28

43.00619(104)

36.5(15) ms

β−, n

42S

1/2+

44P

15

29

44.01299(75)

18.5(25) ms

β−

44S

45P

15

30

45.01922(86)

8 ms [>200 ns]

β−

45S

1/2+

46P

15

31

46.02738(97)

4 ms [>200 ns]

β−

46S

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

26S

16

10

26.02788(32)

10 ms

2p

24Si

0+

27S

16

11

27.01883(22)

15.5(15) ms

β+ (98.0%)

27P

(5/2+)

β+, 2p (2.0%)

25Al

β+, p (<.1%)

26Si

28S

16

12

28.00437(17)

125(10) ms

β+ (79.3%)

28P

0+

β+, p (20.7%)

27Si

29S

16

13

28.99661(5)

187(4) ms

β+ (53.6%)

29P

5/2+

β+, p (46.4%)

28Si

30S

16

14

29.984903(3)

1.178(5) s

β+

30P

0+

31S

16

15

30.9795547(16)

2.572(13) s

β+

31P

1/2+

32S

16

16

31.97207100(15)

Stable

0+

0.9493(31)

0.94454-0.95281

33S

16

17

32.97145876(15)

Stable

3/2+

0.0076(2)

0.00730-0.00793

34S

16

18

33.96786690(12)

Stable

0+

0.0429(28)

0.03976-0.04734

35S

16

19

34.96903216(11)

87.51(12) d

β−

35Cl

3/2+

Trace

36S

16

20

35.96708076(20)

Stable

0+

0.002(1)

0.0013−0.0027

37S

16

21

36.97112557(21)

5.05(2) min

β−

37Cl

7/2−

38S

16

22

37.971163(8)

170.3(7) min

β−

38Cl

0+

39S

16

23

38.97513(5)

11.5(5) s

β−

39Cl

(3/2,5/2,7/2)−

40S

16

24

39.97545(15)

8.8(22) s

β−

40Cl

0+

41S

16

25

40.97958(13)

1.99(5) s

β− (>99.9%)

41Cl

(7/2−)

β−, n (<.1%)

40Cl

42S

16

26

41.98102(13)

1.013(15) s

β− (96%)

42Cl

0+

β−, n (4%)

41Cl

43S

16

27

42.98715(22)

260(15) ms

β− (60%)

43Cl

3/2−

β−, n (40%)

42Cl

43mS

319(5) keV

480(50) ns

(7/2−)

44S

16

28

43.99021(42)

100(1) ms

β− (82%)

44Cl

0+

β−, n (18%)

43Cl

45S

16

29

44.99651(187)

68(2) ms

β−, n (54%)

44Cl

3/2−

β− (46%)

45Cl

46S

16

30

46.00075(75)

50(8) ms

β−

46Cl

0+

47S

16

31

47.00859(86)

20 ms
[>200 ns]

β−

47Cl

3/2−

48S

16

32

48.01417(97)

10 ms
[>200 ns]

β−

48Cl

0+

49S

16

33

49.02362(102)

<200 ns

n

48S

3/2−

 

nuclide
symbol

Atomic Number

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

28Cl

17

11

28.02851(54)

p

27S

(1+)

29Cl

17

12

29.01411(21)

<20 ns

p

28S

(3/2+)

30Cl

17

13

30.00477(21)

<30 ns

p

29S

(3+)

31Cl

17

14

30.99241(5)

150(25) ms

β+ (99.3%)

31S

3/2+

β+, p (.7%)

30P

32Cl

17

15

31.985690(7)

298(1) ms

β+ (99.92%)

32S

1+

β+, α (.054%)

28Si

β+, p (.026%)

31P

33Cl

17

16

32.9774519(5)

2.511(3) s

β+

33S

3/2+

34Cl

17

17

33.97376282(19)

1.5264(14) s

β+

34S

0+

34mCl

146.36(3) keV

32.00(4) min

β+ (55.4%)

34S

3+

IT (44.6%)

34Cl

35Cl

17

18

34.96885268(4)

Stable

3/2+

0.7576(10)

0.75644–0.75923

36Cl

17

19

35.96830698(8)

3.01(2)×105 y

β− (98.1%)

36Ar

2+

Trace

approx. 7×10−13

ε (1.9%)

36S

37Cl

17

20

36.96590259(5)

Stable

3/2+

0.2424(10)

0.24077–0.24356

38Cl

17

21

37.96801043(10)

37.24(5) min

β−

38Ar

2−

38mCl

671.361(8) keV

715(3) ms

IT

38Cl

5−

39Cl

17

22

38.9680082(19)

55.6(2) min

β−

39Ar

3/2+

40Cl

17

23

39.97042(3)

1.35(2) min

β−

40Ar

2−

41Cl

17

24

40.97068(7)

38.4(8) s

β−

41Ar

(1/2+,3/2+)

42Cl

17

25

41.97325(15)

6.8(3) s

β−

42Ar

43Cl

17

26

42.97405(17)

3.07(7) s

β− (>99.9%)

43Ar

3/2+

β−, n (<.1%)

42Ar

44Cl

17

27

43.97828(12)

0.56(11) s

β− (92%)

44Ar

β−, n (8%)

43Ar

45Cl

17

28

44.98029(13)

400(40) ms

β− (76%)

45Ar

3/2+

β−, n (24%)

44Ar

46Cl

17

29

45.98421(77)

232(2) ms

β−, n (60%)

45Ar

β− (40%)

46Ar

47Cl

17

30

46.98871(64)

101(6) ms

β− (97%)

47Ar

3/2+

β−, n (3%)

46Ar

48Cl

17

31

47.99495(75)

100 ms [>200 ns]

β−

48Ar

49Cl

17

32

49.00032(86)

50 ms [>200 ns]

β−

49Ar

3/2+

50Cl

17

33

50.00784(97)

20 ms

β−

50Ar

51Cl

17

34

51.01449(107)

2 ms [>200 ns]

β−

51Ar

3/2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

30Ar

18

12

30.02156(32)

<20 ns

p

29Cl

0+

31Ar

18

13

31.01212(22)

14.4(6) ms

β+, p (55.0%)

30S

5/2(+)

β+ (40.4%)

31Cl

β+, 2p (2.48%)

29P

β+, 3p (2.1%)

28Si

32Ar

18

14

31.9976380(19)

98(2) ms

β+ (56.99%)

32Cl

0+

β+, p (43.01%)

31S

32mAr

5600(100) keV

unknown

5−

33Ar

18

15

32.9899257(5)

173.0(20) ms

β+ (61.35%)

33Cl

1/2+

β+, p (38.65%)

32S

34Ar

18

16

33.9802712(4)

844.5(34) ms

β+

34Cl

0+

35Ar

18

17

34.9752576(8)

1.775(4) s

β+

35Cl

3/2+

36Ar

18

18

35.967545106(29)

Observationally Stable

0+

0.003336(4)

37Ar

18

19

36.96677632(22)

35.04(4) d

ε

37Cl

3/2+

38Ar

18

20

37.9627324(4)

Stable

0+

0.000629(1)

39Ar

18

21

38.964313(5)

269(3) y

β−

39K

7/2−

Trace

40Ar

18

22

39.9623831225(29)

Stable

0+

0.996035(4)

41Ar

18

23

40.9645006(4)

109.61(4) min

β−

41K

7/2−

42Ar

18

24

41.963046(6)

32.9(11) y

β−

42K

0+

Trace

43Ar

18

25

42.965636(6)

5.37(6) min

β−

43K

(5/2−)

44Ar

18

26

43.9649240(17)

11.87(5) min

β−

44K

0+

45Ar

18

27

44.9680400(6)

21.48(15) s

β−

45K

(1/2,3/2,5/2)−

46Ar

18

28

45.96809(4)

8.4(6) s

β−

46K

0+

47Ar

18

29

46.97219(11)

1.23(3) s

β− (99%)

47K

3/2−

β−, n (1%)

46K

48Ar

18

30

47.97454(32)

0.48(40) s

β−

48K

0+

49Ar

18

31

48.98052(54)

170(50) ms

β−

49K

3/2−

50Ar

18

32

49.98443(75)

85(30) ms

β−

50K

0+

51Ar

18

33

50.99163(75)

60 ms [>200 ns]

β−

51K

3/2−

52Ar

18

34

51.99678(97)

10 ms

β−

52K

0+

53Ar

18

35

53.00494(107)

3 ms

β−

53K

(5/2−)

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

excitation energy

32K

19

13

32.02192(54)

unknown

p

31Ar

1+

32mK

950(100) keV

unknown

4+

33K

19

14

33.00726(21)

<25 ns

p

32Ar

(3/2+)

34K

19

15

33.99841(32)

<25 ns

p

33Ar

1+

35K

19

16

34.988010(21)

178(8) ms

β+ (99.63%)

35Ar

3/2+

β+, p (.37%)

34Cl

36K

19

17

35.981292(8)

342(2) ms

β+ (99.94%)

36Ar

2+

β+, p (.048%)

35Cl

β+, α (.012%)

32S

37K

19

18

36.97337589(10)

1.226(7) s

β+

37Ar

3/2+

38K

19

19

37.9690812(5)

7.636(18) min

β+

38Ar

3+

38m1K

130.50(28) keV

924.2(3) ms

0+

38m2K

3458.0(2) keV

21.98(11) µs

(7+),(5+)

39K

19

20

38.96370668(20)

Stable

3/2+

0.932581(44)

40K

19

21

39.96399848(21)

1.248(3)×109 y

β− (89.28%)

40Ca

4

1.17(1)×10−4

EC (10.72%)

40Ar

β+ (0.001%)

40mK

1643.639(11) keV

336(12) ns

0+

41K

19

22

40.96182576(21)

Stable

3/2+

0.067302(44)

42K

19

23

41.96240281(24)

12.360(12) h

β−

42Ca

2

43K

19

24

42.960716(10)

22.3(1) h

β−

43Ca

3/2+

44K

19

25

43.96156(4)

22.13(19) min

β−

44Ca

2−

45K

19

26

44.960699(11)

17.3(6) min

β−

45Ca

3/2+

46K

19

27

45.961977(17)

105(10) s

β−

46Ca

2(−)

47K

19

28

46.961678(9)

17.50(24) s

β−

47Ca

1/2+

48K

19

29

47.965514(26)

6.8(2) s

β− (98.86%)

48Ca

(2−)

β−, n (1.14%)

47Ca

49K

19

30

48.96745(8)

1.26(5) s

β−, n (86%)

48Ca

(3/2+)

β− (14%)

49Ca

50K

19

31

49.97278(30)

472(4) ms

β− (71%)

50Ca

(0−,1,2−)

β−, n (29%)

49Ca

51K

19

32

50.97638(54)

365(5) ms

β− (53%)

51Ca

3/2+

β−, n (47%)

50Ca

52K

19

33

51.98261(75)

105(5) ms

β−, n (64%)

51Ca

(2−)

β−, 2n (21%)

50Ca

β− (15%)

52Ca

53K

19

34

52.98712(75)

30(5) ms

β−, n (67%)

52Ca

(3/2+)

β−, 2n (17%)

51Ca

β− (16%)

53Ca

54K

19

35

53.99420(97)

10(5) ms

β− (>99.9%)

54Ca

2−

β−, n (<.1%)

53Ca

55K

19

36

54.99971(107)

3 ms

β−

55Ca

3/2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

34Ca

20

14

34.01412(32)

<35 ns

p

33K

0+

35Ca

20

15

35.00494(21)

25.7(2) ms

β+ (>99.9%)

35K

1/2+

β+, p (<.1%)

34Ar

36Ca

20

16

35.99309(4)

102(2) ms

β+, p (56.8%)

35Ar

0+

β+ (43.2%)

36K

37Ca

20

17

36.985870(24)

181.1(10) ms

β+, p (74.5%)

36Ar

(3/2+)

β+ (25.5%)

37K

38Ca

20

18

37.976318(5)

440(8) ms

β+

38K

0+

39Ca

20

19

38.9707197(20)

859.6(14) ms

β+

39K

3/2+

40Ca

20

20

39.96259098(22)

Observationally Stable

0+

0.96941(156)

0.96933–0.96947

41Ca

20

21

40.96227806(26)

1.02(7)×105 y

EC

41K

7/2−

Trace

42Ca

20

22

41.95861801(27)

Stable

0+

0.00647(23)

0.00646–0.00648

43Ca

20

23

42.9587666(3)

Stable

7/2−

0.00135(10)

0.00135–0.00135

44Ca

20

24

43.9554818(4)

Stable

0+

0.02086(110)

0.02082–0.02092

45Ca

20

25

44.9561866(4)

162.67(25) d

β−

45Sc

7/2−

46Ca

20

26

45.9536926(24)

Observationally Stable

0+

4(3)×10−5

4×10−5–4×10−5

47Ca

20

27

46.9545460(24)

4.536(3) d

β−

47Sc

7/2−

48Ca

20

28

47.952534(4)

(6.4+0.7
−0.6+1.2
−0.9)×1019 a

β−β−

48Ti

0+

0.00187(21)

0.00186–0.00188

49Ca

20

29

48.955674(4)

8.718(6) min

β−

49Sc

3/2−

50Ca

20

30

49.957519(10)

13.9(6) s

β−

50Sc

0+

51Ca

20

31

50.9615(1)

10.0(8) s

β− (>99.9%)

51Sc

(3/2−)

β−, n (<.1%)

50Sc

52Ca

20

32

51.96510(75)

4.6(3) s

β− (98%)

52Sc

0+

β−, n (2%)

51Sc

53Ca

20

33

52.97005(54)

90(15) ms

β− (70%)

53Sc

3/2−

β−, n (30%)

52Sc

54Ca

20

34

53.97435(75)

50 ms [>300 ns]

β−, n

53Sc

0+

β−

54Sc

55Ca

20

35

54.98055(75)

30 ms [>300 ns]

β−

55Sc

5/2−

56Ca

20

36

55.98557(97)

10 ms [>300 ns]

β−

56Sc

0+

57Ca

20

37

56.99236(107)

5 ms

β−

57Sc

5/2−

β−, n

56Sc

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

37Sc

21

16

37.00305(32)

p

36Ca

7/2−

38Sc

21

17

37.99470(32)

<300 ns

p

37Ca

(2−)

38mSc

p

37Ca

39Sc

21

18

38.984790(26)

<300 ns

p

38Ca

(7/2−)

40Sc

21

19

39.977967(3)

182.3(7) ms

β+ (99.54%)

40Ca

4-

β+, p (.44%)

39K

β+, α (.017%)

36Ar

41Sc

21

20

40.96925113(24)

596.3(17) ms

β+

41Ca

7/2−

42Sc

21

21

41.96551643(29)

681.3(7) ms

β+

42Ca

0+

42mSc

616.28(6) keV

61.7(4) s

β+

42Ca

(7,5,6)+

43Sc

21

22

42.9611507(20)

3.891(12) h

β+

43Ca

7/2−

43m1Sc

151.4(2) keV

438(7) µs

3/2+

43m2Sc

3123.2(3) keV

470(4) ns

(19/2)−

44Sc

21

23

43.9594028(19)

3.97(4) h

β+

44Ca

2+

44m1Sc

67.8680(14) keV

154.2(8) ns

1−

44m2Sc

270.95(20) keV

58.61(10) h

IT (98.8%)

44Sc

6+

β+ (1.2%)

44Ca

44m3Sc

146.224(22) keV

50.4(7) µs

0-

45Sc

21

24

44.9559119(9)

Stable

7/2−

1.0000

45mSc

12.40(5) keV

318(7) ms

IT

45Sc

3/2+

46Sc

21

25

45.9551719(9)

83.79(4) d

β−

46Ti

4+

46m1Sc

52.011(1) keV

9.4(8) µs

6+

46m2Sc

142.528(7) keV

18.75(4) s

IT

46Sc

1−

47Sc

21

26

46.9524075(22)

3.3492(6) d

β−

47Ti

7/2−

47mSc

766.83(9) keV

272(8) ns

(3/2)+

48Sc

21

27

47.952231(6)

43.67(9) h

β−

48Ti

6+

49Sc

21

28

48.950024(4)

57.2(2) min

β−

49Ti

7/2−

50Sc

21

29

49.952188(17)

102.5(5) s

β−

50Ti

5+

50mSc

256.895(10) keV

350(40) ms

IT (97.5%)

50Sc

2+,3+

β− (2.5%)

50Ti

51Sc

21

30

50.953603(22)

12.4(1) s

β−

51Ti

(7/2)−

52Sc

21

31

51.95668(21)

8.2(2) s

β−

52Ti

3(+)

53Sc

21

32

52.95961(32)

>3 s

β− (>99.9%)

53Ti

(7/2−)

β−, n (<.1%)

52Ti

54Sc

21

33

53.96326(40)

260(30) ms

β− (>99.9%)

54Ti

3+

β−, n (<.1%)

53Ti

54mSc

110(3) keV

7(5) µs

(5+)

55Sc

21

34

54.96824(79)

0.115(15) s

β− (>99.9%)

55Ti

7/2−

β−, n (<.1%)

54Ti

56Sc

21

35

55.97287(75)

35(5) ms

β−

56Ti

(1+)

57Sc

21

36

56.97779(75)

13(4) ms

β−

57Ti

7/2−

58Sc

21

37

57.98371(86)

12(5) ms

β−

58Ti

(3+)

59Sc

21

38

58.98922(97)

10 ms

β−, n

58Ti

7/2−

β−

59Ti

60Sc

21

39

59.99571(97)

3 ms

3+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

38Ti

22

16

38.00977(27)

<120 ns

2p

36Ca

0+

39Ti

22

17

39.00161(22)

31(4) ms
[31(+6-4) ms]

β+, p (85%)

38Ca

3/2+

β+ (15%)

39Sc

β+, 2p (<.1%)

37K

40Ti

22

18

39.99050(17)

53.3(15) ms

β+ (56.99%)

40Sc

0+

β+, p (43.01%)

39Ca

41Ti

22

19

40.98315(11)

80.4(9) ms

β+, p (>99.9%)

40Ca

3/2+

β+ (<.1%)

41Sc

42Ti

22

20

41.973031(6)

199(6) ms

β+

42Sc

0+

43Ti

22

21

42.968522(7)

509(5) ms

β+

43Sc

7/2−

43m1Ti

313.0(10) keV

12.6(6) µs

(3/2+)

43m2Ti

3066.4(10) keV

560(6) ns

(19/2−)

44Ti

22

22

43.9596901(8)

60.0(11) y

EC

44Sc

0+

45Ti

22

23

44.9581256(11)

184.8(5) min

β+

45Sc

7/2−

46Ti

22

24

45.9526316(9)

Stable

0+

0.0825(3)

47Ti

22

25

46.9517631(9)

Stable

5/2−

0.0744(2)

48Ti

22

26

47.9479463(9)

Stable

0+

0.7372(3)

49Ti

22

27

48.9478700(9)

Stable

7/2−

0.0541(2)

50Ti

22

28

49.9447912(9)

Stable

0+

0.0518(2)

51Ti

22

29

50.946615(1)

5.76(1) min

β−

51V

3/2−

52Ti

22

30

51.946897(8)

1.7(1) min

β−

52V

0+

53Ti

22

31

52.94973(11)

32.7(9) s

β−

53V

(3/2)−

54Ti

22

32

53.95105(13)

1.5(4) s

β−

54V

0+

55Ti

22

33

54.95527(16)

490(90) ms

β−

55V

3/2−

56Ti

22

34

55.95820(21)

164(24) ms

β− (>99.9%)

56V

0+

β−, n (<.1%)

55V

57Ti

22

35

56.96399(49)

60(16) ms

β− (>99.9%)

57V

5/2−

β−, n (<.1%)

56V

58Ti

22

36

57.96697(75)

54(7) ms

β−

58V

0+

59Ti

22

37

58.97293(75)

30(3) ms

β−

59V

(5/2−)

60Ti

22

38

59.97676(86)

22(2) ms

β−

60V

0+

61Ti

22

39

60.98320(97)

10 ms
[>300 ns]

β−

61V

1/2−

β−, n

60V

62Ti

22

40

61.98749(97)

10 ms

0+

63Ti

22

41

62.99442(107)

3 ms

1/2−

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

40V

23

17

40.01109(54)

p

39Ti

2−

41V

23

18

40.99978(22)

p

40Ti

7/2−

42V

23

19

41.99123(21)

<55 ns

p

41Ti

2−

43V

23

20

42.98065(25)

80 ms

β+

43Ti

7/2−

44V

23

21

43.97411(13)

111(7) ms

β+ (>99.9%)

44Ti

(2+)

β−, α (<.1%)

40Ca

44mV

270(100) keV

150(3) ms

β+

44Ti

(6+)

45V

23

22

44.965776(18)

547(6) ms

β+

45Ti

7/2−

46V

23

23

45.9602005(11)

422.50(11) ms

β+

46Ti

0+

46mV

801.46(10) keV

1.02(7) ms

IT

46V

3+

47V

23

24

46.9549089(9)

32.6(3) min

β+

47Ti

3/2−

48V

23

25

47.9522537(27)

15.9735(25) d

β+

48Ti

4+

49V

23

26

48.9485161(12)

329(3) d

EC

49Ti

7/2−

50V

23

27

49.9471585(11)

1.4(4)×1017 y

β+ (83%)

50Ti

6+

0.00250(4)

0.002487–0.002502

β− (17%)

50Cr

51V

23

28

50.9439595(11)

Stable

7/2−

0.99750(4)

0.997498–0.997513

52V

23

29

51.9447755(11)

3.743(5) min

β−

52Cr

3+

53V

23

30

52.944338(3)

1.60(4) min

β−

53Cr

7/2−

54V

23

31

53.946440(16)

49.8(5) s

β−

54Cr

3+

54mV

108(3) keV

900(500) ns

(5+)

55V

23

32

54.94723(11)

6.54(15) s

β−

55Cr

(7/2−)

56V

23

33

55.95053(22)

216(4) ms

β− (>99.9%)

56Cr

(1+)

β−, n

55Cr

57V

23

34

56.95256(25)

0.35(1) s

β− (>99.9%)

57Cr

(3/2−)

β−, n (<.1%)

56Cr

58V

23

35

57.95683(27)

191(8) ms

β− (>99.9%)

58Cr

3+

β−, n (<.1%)

57Cr

59V

23

36

58.96021(33)

75(7) ms

β− (>99.9%)

59Cr

7/2−

β−, n (<.1%)

58Cr

60V

23

37

59.96503(51)

122(18) ms

β− (>99.9%)

60Cr

3+

β−, n (<.1%)

59Cr

60m1V

0(150) keV

40(15) ms

1+

60m2V

101(1) keV

>400 ns

61V

23

38

60.96848(43)

47.0(12) ms

β−

61Cr

7/2−

62V

23

39

61.97378(54)

33.5(20) ms

β−

62Cr

3+

63V

23

40

62.97755(64)

17(3) ms

β−

63Cr

(7/2−)

64V

23

41

63.98347(75)

10 ms [>300 ns]

65V

23

42

64.98792(86)

10 ms

5/2−

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

42Cr

24

18

42.00643(32)

14(3) ms
[13(+4-2) ms]

β+ (>99.9%)

42V

0+

2p (<.1%)

40Ti

43Cr

24

19

42.99771(24)

21.6(7) ms

β+ (71%)

43V

(3/2+)

β+, p (23%)

42Ti

β+, 2p (6%)

41Sc

β+, α (<.1%)

39Sc

44Cr

24

20

43.98555(5)

54(4) ms
[53(+4-3) ms]

β+ (93%)

44V

0+

β+, p (7%)

43Ti

45Cr

24

21

44.97964(54)

50(6) ms

β+ (73%)

45V

7/2−

β+, p (27%)

44Ti

45mCr

50(100) keV

1 ms

IT

45Cr

3/2+

β+

45V

46Cr

24

22

45.968359(21)

0.26(6) s

β+

46V

0+

47Cr

24

23

46.962900(15)

500(15) ms

β+

47V

3/2−

48Cr

24

24

47.954032(8)

21.56(3) h

β+

48V

0+

49Cr

24

25

48.9513357(26)

42.3(1) min

β+

49V

5/2−

50Cr

24

26

49.9460442(11)

Observationally Stable

0+

0.04345(13)

0.04294–0.04345

51Cr

24

27

50.9447674(11)

27.7025(24) d

EC

51V

7/2−

52Cr

24

28

51.9405075(8)

Stable

0+

0.83789(18)

0.83762–0.83790

53Cr

24

29

52.9406494(8)

Stable

3/2−

0.09501(17)

0.09501–0.09553

54Cr

24

30

53.9388804(8)

Stable

0+

0.02365(7)

0.02365–0.02391

55Cr

24

31

54.9408397(8)

3.497(3) min

β−

55Mn

3/2−

56Cr

24

32

55.9406531(20)

5.94(10) min

β−

56Mn

0+

57Cr

24

33

56.943613(2)

21.1(10) s

β−

57Mn

(3/2−)

58Cr

24

34

57.94435(22)

7.0(3) s

β−

58Mn

0+

59Cr

24

35

58.94859(26)

460(50) ms

β−

59Mn

5/2−

59mCr

503.0(17) keV

96(20) µs

(9/2+)

60Cr

24

36

59.95008(23)

560(60) ms

β−

60Mn

0+

61Cr

24

37

60.95472(27)

261(15) ms

β− (>99.9%)

61Mn

5/2−

β−, n (<.1%)

60Mn

62Cr

24

38

61.95661(36)

199(9) ms

β− (>99.9%)

62Mn

0+

β−, n

61Mn

63Cr

24

39

62.96186(32)

129(2) ms

β−

63Mn

(1/2−)

β−, n

62Mn

64Cr

24

40

63.96441(43)

43(1) ms

β−

64Mn

0+

65Cr

24

41

64.97016(54)

27(3) ms

β−

65Mn

(1/2−)

66Cr

24

42

65.97338(64)

10(6) ms

β−

66Mn

0+

67Cr

24

43

66.97955(75)

10 ms
[>300 ns]

β−

67Mn

1/2−

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

44Mn

25

19

44.00687(54)

<105 ns

p

43Cr

(2−)

45Mn

25

20

44.99451(32)

unknown

p

44Cr

(7/2−)

46Mn

25

21

45.98672(12)

37(3) ms

β+ (78%)

46Cr

(4+)

β+, p (22%)

45V

β+, α (<1%)

42Ti

β+, 2p (<1%)

44Ti

46mMn

150(100) keV

1 ms

β+

46Cr

1-

47Mn

25

22

46.97610(17)

100(50) ms

β+ (96.6%)

47Cr

5/2−

β+, p (3.4%)

46V

48Mn

25

23

47.96852(12)

158.1(22) ms

β+ (99.71%)

48Cr

4+

β+, p (.027%)

47V

β+, α (6×10−4%)

44Ti

49Mn

25

24

48.959618(26)

382(7) ms

β+

49Cr

5/2−

50Mn

25

25

49.9542382(11)

283.29(8) ms

β+

50Cr

0+

50mMn

229(7) keV

1.75(3) min

β+

50Cr

5+

51Mn

25

26

50.9482108(11)

46.2(1) min

β+

51Cr

5/2−

52Mn

25

27

51.9455655(21)

5.591(3) d

β+

52Cr

6+

52mMn

377.749(5) keV

21.1(2) min

β+ (98.25%)

52Cr

2+

IT (1.75%)

52Mn

53Mn

25

28

52.9412901(9)

3.7(4)×106 y

EC

53Cr

7/2−

trace

54Mn

25

29

53.9403589(14)

312.03(3) d

EC 99.99%

54Cr

3+

β− (2.9×10−4%)

54Fe

β+ (5.76×10−7%)

54Cr

55Mn

25

30

54.9380451(7)

Stable

5/2−

1.0000

56Mn

25

31

55.9389049(7)

2.5789(1) h

β−

56Fe

3+

57Mn

25

32

56.9382854(20)

85.4(18) s

β−

57Fe

5/2−

58Mn

25

33

57.93998(3)

3.0(1) s

β−

58Fe

1+

58mMn

71.78(5) keV

65.2(5) s

β− (>99.9%)

58Fe

(4)+

IT (<.1%)

58Mn

59Mn

25

34

58.94044(3)

4.59(5) s

β−

59Fe

(5/2)−

60Mn

25

35

59.94291(9)

51(6) s

β−

60Fe

0+

60mMn

271.90(10) keV

1.77(2) s

β− (88.5%)

60Fe

3+

IT (11.5%)

60Mn

61Mn

25

36

60.94465(24)

0.67(4) s

β−

61Fe

(5/2)−

62Mn

25

37

61.94843(24)

671(5) ms

β− (>99.9%)

62Fe

(3+)

β−, n (<.1%)

61Fe

62mMn

0(150) keV

92(13) ms

(1+)

63Mn

25

38

62.95024(28)

275(4) ms

β−

63Fe

5/2−

64Mn

25

39

63.95425(29)

88.8(25) ms

β− (>99.9%)

64Fe

(1+)

β−, n (<.1%)

63Fe

64mMn

135(3) keV

>100 µs

65Mn

25

40

64.95634(58)

92(1) ms

β− (>99.9%)

65Fe

5/2−

β−, n (<.1%)

64Fe

66Mn

25

41

65.96108(43)

64.4(18) ms

β− (>99.9%)

66Fe

β−, n (<.1%)

65Fe

67Mn

25

42

66.96414(54)

45(3) ms

β−

67Fe

5/2−

68Mn

25

43

67.96930(64)

28(4) ms

69Mn

25

44

68.97284(86)

14(4) ms

5/2−

 

nuclide
symbol

Z(p)

N(n)

Atomic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

45Fe

26

19

45.01458(24)

1.89(49) ms

β+ (30%)

45Mn

3/2+

2p (70%)

43Cr

46Fe

26

20

46.00081(38)

9(4) ms
[12(+4-3) ms]

β+ (>99.9%)

46Mn

0+

β+, p (<.1%)

45Cr

47Fe

26

21

46.99289(28)

21.8(7) ms

β+ (>99.9%)

47Mn

7/2−

β+, p (<.1%)

46Cr

48Fe

26

22

47.98050(8)

44(7) ms

β+ (96.41%)

48Mn

0+

β+, p (3.59%)

47Cr

49Fe

26

23

48.97361(16)

70(3) ms

β+, p (52%)

48Cr

(7/2−)

β+ (48%)

49Mn

50Fe

26

24

49.96299(6)

155(11) ms

β+ (>99.9%)

50Mn

0+

β+, p (<.1%)

49Cr

51Fe

26

25

50.956820(16)

305(5) ms

β+

51Mn

5/2−

52Fe

26

26

51.948114(7)

8.275(8) h

β+

52mMn

0+

52mFe

6.81(13) MeV

45.9(6) s

β+

52Mn

(12+)

53Fe

26

27

52.9453079(19)

8.51(2) min

β+

53Mn

7/2−

53mFe

3040.4(3) keV

2.526(24) min

IT

53Fe

19/2−

54Fe

26

28

53.9396090(5)

Observationally Stable

0+

0.05845(35)

0.05837–0.05861

54mFe

6526.9(6) keV

364(7) ns

10+

55Fe

26

29

54.9382934(7)

2.737(11) y

EC

55Mn

3/2−

56Fe

26

30

55.9349363(5)

Stable

0+

0.91754(36)

0.91742–0.91760

57Fe

26

31

56.9353928(5)

Stable

1/2−

0.02119(10)

0.02116–0.02121

58Fe

26

32

57.9332744(5)

Stable

0+

0.00282(4)

0.00281–0.00282

59Fe

26

33

58.9348755(8)

44.495(9) d

β−

59Co

3/2−

60Fe

26

34

59.934072(4)

2.6×106 y

β−

60Co

0+

trace

61Fe

26

35

60.936745(21)

5.98(6) min

β−

61Co

3/2−,5/2−

61mFe

861(3) keV

250(10) ns

9/2+

62Fe

26

36

61.936767(16)

68(2) s

β−

62Co

0+

63Fe

26

37

62.94037(18)

6.1(6) s

β−

63Co

(5/2)−

64Fe

26

38

63.9412(3)

2.0(2) s

β−

64Co

0+

65Fe

26

39

64.94538(26)

1.3(3) s

β−

65Co

1/2−

65mFe

364(3) keV

430(130) ns

(5/2−)

66Fe

26

40

65.94678(32)

440(40) ms

β− (>99.9%)

66Co

0+

β−, n (<.1%)

65Co

67Fe

26

41

66.95095(45)

394(9) ms

β− (>99.9%)

67Co

1/2−

β−, n (<.1%)

66Co

67mFe

367(3) keV

64(17) µs

(5/2−)

68Fe

26

42

67.95370(75)

187(6) ms

β− (>99.9%)

68Co

0+

β−, n

67Co

69Fe

26

43

68.95878(54)

109(9) ms

β− (>99.9%)

69Co

1/2−

β−, n (<.1%)

68Co

70Fe

26

44

69.96146(64)

94(17) ms

0+

71Fe

26

45

70.96672(86)

30 ms
[>300 ns]

7/2+

72Fe

26

46

71.96962(86)

10 ms
[>300 ns]

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

47Co

27

20

47.01149(54)

7/2−

48Co

27

21

48.00176(43)

p

47Fe

6+

49Co

27

22

48.98972(28)

<35 ns

p (>99.9%)

48Fe

7/2−

β+ (<.1%)

49Fe

50Co

27

23

49.98154(18)

44(4) ms

β+, p (54%)

49Mn

(6+)

β+ (46%)

50Fe

51Co

27

24

50.97072(16)

60 ms [>200 ns]

β+

51Fe

7/2−

52Co

27

25

51.96359(7)

115(23) ms

β+

52Fe

(6+)

52mCo

380(100) keV

104(11) ms

β+

52Fe

2+

IT

52Co

53Co

27

26

52.954219(19)

242(8) ms

β+

53Fe

7/2−

53mCo

3197(29) keV

247(12) ms

β+ (98.5%)

53Fe

(19/2−)

p (1.5%)

52Fe

54Co

27

27

53.9484596(8)

193.28(7) ms

β+

54Fe

0+

54mCo

197.4(5) keV

1.48(2) min

β+

54Fe

(7)+

55Co

27

28

54.9419990(8)

17.53(3) h

β+

55Fe

7/2−

56Co

27

29

55.9398393(23)

77.233(27) d

β+

56Fe

4+

57Co

27

30

56.9362914(8)

271.74(6) d

EC

57Fe

7/2−

58Co

27

31

57.9357528(13)

70.86(6) d

β+

58Fe

2+

58m1Co

24.95(6) keV

9.04(11) h

IT

58Co

5+

58m2Co

53.15(7) keV

10.4(3) µs

4+

59Co

27

32

58.9331950(7)

Stable

7/2−

1.0000

60Co

27

33

59.9338171(7)

5.2713(8) y

β−, γ

60Ni

5+

60mCo

58.59(1) keV

10.467(6) min

IT (99.76%)

60Co

2+

β− (.24%)

60Ni

61Co

27

34

60.9324758(10)

1.650(5) h

β−

61Ni

7/2−

62Co

27

35

61.934051(21)

1.50(4) min

β−

62Ni

2+

62mCo

22(5) keV

13.91(5) min

β− (99%)

62Ni

5+

IT (1%)

62Co

63Co

27

36

62.933612(21)

26.9(4) s

β−

63Ni

7/2−

64Co

27

37

63.935810(21)

0.30(3) s

β−

64Ni

1+

65Co

27

38

64.936478(14)

1.20(6) s

β−

65Ni

(7/2)−

66Co

27

39

65.93976(27)

0.18(1) s

β−

66Ni

(3+)

66m1Co

175(3) keV

1.21(1) µs

(5+)

66m2Co

642(5) keV

>100 µs

(8-)

67Co

27

40

66.94089(34)

0.425(20) s

β−

67Ni

(7/2−)

68Co

27

41

67.94487(34)

0.199(21) s

β−

68Ni

(7-)

68mCo

150(150) keV

1.6(3) s

(3+)

69Co

27

42

68.94632(36)

227(13) ms

β− (>99.9%)

69Ni

7/2−

β−, n (<.1%)

68Ni

70Co

27

43

69.9510(9)

119(6) ms

β− (>99.9%)

70Ni

(6-)

β−, n (<.1%)

69Ni

70mCo

200(200) keV

500(180) ms

(3+)

71Co

27

44

70.9529(9)

97(2) ms

β− (>99.9%)

71Ni

7/2−

β−, n (<.1%)

70Ni

72Co

27

45

71.95781(64)

62(3) ms

β− (>99.9%)

72Ni

(6-,7-)

β−, n (<.1%)

71Ni

73Co

27

46

72.96024(75)

41(4) ms

7/2−

74Co

27

47

73.96538(86)

50 ms [>300 ns]

0+

75Co

27

48

74.96833(86)

40 ms [>300 ns]

7/2−

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy (keV)

48Ni

28

20

48.01975(54)

10 ms
[>500 ns]

0+

49Ni

28

21

49.00966(43)

13(4) ms
[12(+5-3) ms]

7/2−

50Ni

28

22

49.99593(28)

9.1(18) ms

β+

50Co

0+

51Ni

28

23

50.98772(28)

30 ms
[>200 ns]

β+

51Co

7/2−

52Ni

28

24

51.97568(9)

38(5) ms

β+ (83%)

52Co

0+

β+, p (17%)

51Fe

53Ni

28

25

52.96847(17)

45(15) ms

β+ (55%)

53Co

(7/2−)

β+, p (45%)

52Fe

54Ni

28

26

53.95791(5)

104(7) ms

β+

54Co

0+

55Ni

28

27

54.951330(12)

204.7(17) ms

β+

55Co

7/2−

56Ni

28

28

55.942132(12)

6.075(10) d

β+

56Co

0+

57Ni

28

29

56.9397935(19)

35.60(6) h

β+

57Co

3/2−

58Ni

28

30

57.9353429(7)

Observationally stable

0+

0.680769(89)

59Ni

28

31

58.9343467(7)

7.6(5)×104 y

EC (99%)

59Co

3/2−

β+ (1.5x10−5%)

60Ni

28

32

59.9307864(7)

Stable

0+

0.262231(77)

61Ni

28

33

60.9310560(7)

Stable

3/2−

0.011399(6)

62Ni

28

34

61.9283451(6)

Stable

0+

0.036345(17)

63Ni

28

35

62.9296694(6)

100.1(20) y

β−

63Cu

1/2−

63mNi

87.15(11) keV

1.67(3) µs

5/2−

64Ni

28

36

63.9279660(7)

Stable

0+

0.009256(9)

65Ni

28

37

64.9300843(7)

2.5172(3) h

β−

65Cu

5/2−

65mNi

63.37(5) keV

69(3) µs

1/2−

66Ni

28

38

65.9291393(15)

54.6(3) h

β−

66Cu

0+

67Ni

28

39

66.931569(3)

21(1) s

β−

67Cu

1/2−

67mNi

1007(3) keV

13.3(2) µs

β−

67Cu

9/2+

IT

67Ni

68Ni

28

40

67.931869(3)

29(2) s

β−

68Cu

0+

68m1Ni

1770.0(10) keV

276(65) ns

0+

68m2Ni

2849.1(3) keV

860(50) µs

5-

69Ni

28

41

68.935610(4)

11.5(3) s

β−

69Cu

9/2+

69m1Ni

321(2) keV

3.5(4) s

β−

69Cu

(1/2−)

IT

69Ni

69m2Ni

2701(10) keV

439(3) ns

(17/2−)

70Ni

28

42

69.93650(37)

6.0(3) s

β−

70Cu

0+

70mNi

2860(2) keV

232(1) ns

8+

71Ni

28

43

70.94074(40)

2.56(3) s

β−

71Cu

1/2−

72Ni

28

44

71.94209(47)

1.57(5) s

β− (>99.9%)

72Cu

0+

β−, n (<.1%)

71Cu

73Ni

28

45

72.94647(32)

0.84(3) s

β− (>99.9%)

73Cu

(9/2+)

β−, n (<.1%)

72Cu

74Ni

28

46

73.94807(43)

0.68(18) s

β− (>99.9%)

74Cu

0+

β−, n (<.1%)

73Cu

75Ni

28

47

74.95287(43)

0.6(2) s

β− (98.4%)

75Cu

(7/2+)

β−, n (1.6%)

74Cu

76Ni

28

48

75.95533(97)

470(390) ms
[0.24(+55-24) s]

β− (>99.9%)

76Cu

0+

β−, n (<.1%)

75Cu

77Ni

28

49

76.96055(54)

300 ms
[>300 ns]

β−

77Cu

9/2+

78Ni

28

50

77.96318(118)

120 ms
[>300 ns]

β−

78Cu

0+

79Ni

28

51

78.970400(640)

43.0 ms +86-75

β−

79Cu

80Ni

28

52

78.970400(640)

24 ms +26-17

β−

80Cu

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

52Cu

29

23

51.99718(28)

p

51Ni

(3+)

53Cu

29

24

52.98555(28)

<300 ns

p

52Ni

(3/2−)

54Cu

29

25

53.97671(23)

<75 ns

p

53Ni

(3+)

55Cu

29

26

54.96605(32)

40 ms [>200 ns]

β+

55Ni

3/2−

p

54Ni

56Cu

29

27

55.95856(15)

93(3) ms

β+

56Ni

(4+)

57Cu

29

28

56.949211(17)

196.3(7) ms

β+

57Ni

3/2−

58Cu

29

29

57.9445385(17)

3.204(7) s

β+

58Ni

1+

59Cu

29

30

58.9394980(8)

81.5(5) s

β+

59Ni

3/2−

60Cu

29

31

59.9373650(18)

23.7(4) min

β+

60Ni

2+

61Cu

29

32

60.9334578(11)

3.333(5) h

β+

61Ni

3/2−

62Cu

29

33

61.932584(4)

9.673(8) min

β+

62Ni

1+

63Cu

29

34

62.9295975(6)

Stable

3/2−

0.6915(15)

0.68983–0.69338

64Cu

29

35

63.9297642(6)

12.700(2) h

β+ (61%)

64Ni

1+

β− (39%)

64Zn

65Cu

29

36

64.9277895(7)

Stable

3/2−

0.3085(15)

0.30662–0.31017

66Cu

29

37

65.9288688(7)

5.120(14) min

β−

66Zn

1+

67Cu

29

38

66.9277303(13)

61.83(12) h

β−

67Zn

3/2−

68Cu

29

39

67.9296109(17)

31.1(15) s

β−

68Zn

1+

68mCu

721.6(7) keV

3.75(5) min

IT (84%)

68Cu

(6-)

β− (16%)

68Zn

69Cu

29

40

68.9294293(15)

2.85(15) min

β−

69Zn

3/2−

69mCu

2741.8(10) keV

360(30) ns

(13/2+)

70Cu

29

41

69.9323923(17)

44.5(2) s

β−

70Zn

(6-)

70m1Cu

101.1(3) keV

33(2) s

β−

70Zn

(3-)

70m2Cu

242.6(5) keV

6.6(2) s

1+

71Cu

29

42

70.9326768(16)

19.4(14) s

β−

71Zn

(3/2−)

71mCu

2756(10) keV

271(13) ns

(19/2−)

72Cu

29

43

71.9358203(15)

6.6(1) s

β−

72Zn

(1+)

72mCu

270(3) keV

1.76(3) µs

(4-)

73Cu

29

44

72.936675(4)

4.2(3) s

β− (>99.9%)

73Zn

(3/2−)

β−, n (<.1%)

72Zn

74Cu

29

45

73.939875(7)

1.594(10) s

β−

74Zn

(1+,3+)

75Cu

29

46

74.94190(105)

1.224(3) s

β− (96.5%)

75Zn

(3/2−)

β−, n (3.5%)

74Zn

76Cu

29

47

75.945275(7)

641(6) ms

β− (97%)

76Zn

(3,5)

β−, n (3%)

75Zn

76mCu

0(200) keV

1.27(30) s

β−

76Zn

(1,3)

77Cu

29

48

76.94785(43)

469(8) ms

β−

77Zn

3/2−

78Cu

29

49

77.95196(43)

342(11) ms

β−

78Zn

79Cu

29

50

78.95456(54)

188(25) ms

β−, n (55%)

78Zn

3/2−

β− (45%)

79Zn

80Cu

29

51

79.96087(64)

100 ms [>300 ns]

β−

80Zn

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

54Zn

30

24

53.99295(43)

2p

52Ni

0+

55Zn

30

25

54.98398(27)

20 ms [>1.6 µs]

2p

53Ni

5/2−

β+

55Cu

56Zn

30

26

55.97238(28)

36(10) ms

β+

56Cu

0+

57Zn

30

27

56.96479(11)

38(4) ms

β+, p (65%)

56Ni

7/2−

β+ (35%)

57Cu

58Zn

30

28

57.95459(5)

84(9) ms

β+, p (60%)

57Ni

0+

β+ (40%)

58Cu

59Zn

30

29

58.94926(4)

182.0(18) ms

β+ (99%)

59Cu

3/2−

β+, p (1%)

58Ni

60Zn

30

30

59.941827(11)

2.38(5) min

β+

60Cu

0+

61Zn

30

31

60.939511(17)

89.1(2) s

β+

61Cu

3/2−

61m1Zn

88.4(1) keV

<430 ms

1/2−

61m2Zn

418.10(15) keV

140(70) ms

3/2−

61m3Zn

756.02(18) keV

<130 ms

5/2−

62Zn

30

32

61.934330(11)

9.186(13) h

β+

62Cu

0+

63Zn

30

33

62.9332116(17)

38.47(5) min

β+

63Cu

3/2−

64Zn

30

34

63.9291422(7)

Observationally Stable

0+

0.4917(75)

65Zn

30

35

64.9292410(7)

243.66(9) d

β+

65Cu

5/2−

65mZn

53.928(10) keV

1.6(6) µs

(1/2)−

66Zn

30

36

65.9260334(10)

Stable

0+

0.2773(98)

67Zn

30

37

66.9271273(10)

Stable

5/2−

0.0404(16)

68Zn

30

38

67.9248442(10)

Stable

0+

0.1845(63)

69Zn

30

39

68.9265503(10)

56.4(9) min

β−

69Ga

1/2−

69mZn

438.636(18) keV

13.76(2) h

IT (96.7%)

69Zn

9/2+

β− (3.3%)

69Ga

70Zn

30

40

69.9253193(21)

Observationally Stable

0+

0.0061(10)

71Zn

30

41

70.927722(11)

2.45(10) min

β−

71Ga

1/2−

71mZn

157.7(13) keV

3.96(5) h

β− (99.95%)

71Ga

9/2+

IT (.05%)

71Zn

72Zn

30

42

71.926858(7)

46.5(1) h

β−

72Ga

0+

73Zn

30

43

72.92978(4)

23.5(10) s

β−

73Ga

(1/2)−

73m1Zn

195.5(2) keV

13.0(2) ms

(5/2+)

73m2Zn

237.6(20) keV

5.8(8) s

β−

73Ga

(7/2+)

IT

73Zn

74Zn

30

44

73.92946(5)

95.6(12) s

β−

74Ga

0+

75Zn

30

45

74.93294(8)

10.2(2) s

β−

75Ga

(7/2+)

76Zn

30

46

75.93329(9)

5.7(3) s

β−

76Ga

0+

77Zn

30

47

76.93696(13)

2.08(5) s

β−

77Ga

(7/2+)

77mZn

772.39(12) keV

1.05(10) s

IT (50%)

77Zn

1/2−

β− (50%)

77Ga

78Zn

30

48

77.93844(10)

1.47(15) s

β−

78Ga

0+

78mZn

2673(1) keV

319(9) ns

(8+)

79Zn

30

49

78.94265(28)

0.995(19) s

β− (98.7%)

79Ga

(9/2+)

β−, n (1.3%)

78Ga

80Zn

30

50

79.94434(18)

545(16) ms

β− (99%)

80Ga

0+

β−, n (1%)

79Ga

81Zn

30

51

80.95048(32)

290(50) ms

β− (92.5%)

81Ga

5/2+

β−, n (7.5%)

80Ga

82Zn

30

52

81.95442(54)

100 ms [>300 ns]

β−

82Ga

0+

83Zn

30

53

82.96103(54)

80 ms [>300 ns]

5/2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

56Ga

31

25

55.99491(28)

p

55Zn

3+

57Ga

31

26

56.98293(28)

p

56Zn

1/2−

58Ga

31

27

57.97425(23)

p

57Zn

2+

59Ga

31

28

58.96337(18)

p

58Zn

3/2−

60Ga

31

29

59.95706(12)

70(10) ms

β+

60Zn

(2+)

61Ga

31

30

60.94945(6)

168(3) ms

β+

61Zn

3/2−

62Ga

31

31

61.944175(30)

116.18(4) ms

β+

62Zn

0+

63Ga

31

32

62.9392942(14)

32.4(5) s

β+

63Zn

(3/2−)

64Ga

31

33

63.9368387(22)

2.627(12) min

β+

64Zn

0(+)

64mGa

42.85(8) keV

21.9(7) µs

2+

65Ga

31

34

64.9327348(9)

15.2(2) min

β+

65Zn

3/2−

66Ga

31

35

65.931589(3)

9.49(7) h

β+

66Zn

0+

67Ga

31

36

66.9282017(14)

3.2612(6) d

EC

67Zn

3/2−

68Ga

31

37

67.9279801(16)

67.71(9) min

β+

68Zn

1+

69Ga

31

38

68.9255736(13)

Stable

3/2−

0.60108(9)

70Ga

31

39

69.9260220(13)

21.14(3) min

β− (99.59)

70Ge

1+

EC (0.41%)

70Zn

71Ga

31

40

70.9247013(11)

Stable

3/2−

0.39892(9)

72Ga

31

41

71.9263663(11)

14.095(3) h

β−

72Ge

3-

72mGa

119.66(5) keV

39.68(13) ms

IT

72Ga

(0+)

73Ga

31

42

72.9251747(18)

4.86(3) h

β−

73Ge

3/2−

74Ga

31

43

73.926946(4)

8.12(12) min

β−

74Ge

(3-)

74mGa

59.571(14) keV

9.5(10) s

(0)

75Ga

31

44

74.9265002(26)

126(2) s

β−

75Ge

(3/2)−

76Ga

31

45

75.9288276(21)

32.6(6) s

β−

76Ge

(2+,3+)

77Ga

31

46

76.9291543(26)

13.2(2) s

β−

77Ge

(3/2−)

78Ga

31

47

77.9316082(26)

5.09(5) s

β−

78Ge

(3+)

79Ga

31

48

78.93289(11)

2.847(3) s

β− (99.911%)

79mGe

(3/2−)

β−, n (.089%)

78Ge

80Ga

31

49

79.93652(13)

1.697(11) s

β− (99.11%)

80Ge

(3)

β−, n (.89%)

79Ge

81Ga

31

50

80.93775(21)

1.217(5) s

β− (88.11%)

81mGe

(5/2−)

β−, n (11.89%)

80Ge

82Ga

31

51

81.94299(32)

0.599(2) s

β− (78.5%)

82Ge

(1,2,3)

β−, n (21.5%)

81Ge

83Ga

31

52

82.94698(32)

308(1) ms

β− (60%)

83Ge

3/2−

β−, n (40%)

82Ge

84Ga

31

53

83.95265(43)

0.085(10) s

β−, n (70%)

83Ge

β− (30%)

84Ge

85Ga

31

54

84.95700(54)

50 ms [>300 ns]

3/2−

86Ga

31

55

85.96312(86)

30 ms [>300 ns]

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

58Ge

32

26

57.99101(34)

2p

56Zn

0+

59Ge

32

27

58.98175(30)

2p

57Zn

7/2−

60Ge

32

28

59.97019(25)

30 ms

β+

60Ga

0+

2p

58Zn

61Ge

32

29

60.96379(32)

39(12) ms

β+, p (80%)

60Zn

(3/2−)

β+ (20%)

61Ga

62Ge

32

30

61.95465(15)

129(35) ms

β+

62Ga

0+

63Ge

32

31

62.94964(21)

142(8) ms

β+

63Ga

(3/2−)

64Ge

32

32

63.94165(3)

63.7(25) s

β+

64Ga

0+

65Ge

32

33

64.93944(11)

30.9(5) s

β+ (99.99%)

65Ga

(3/2)−

β+, p (.01%)

64Zn

66Ge

32

34

65.93384(3)

2.26(5) h

β+

66Ga

0+

67Ge

32

35

66.932734(5)

18.9(3) min

β+

67Ga

1/2−

67m1Ge

18.20(5) keV

13.7(9) µs

5/2−

67m2Ge

751.70(6) keV

110.9(14) ns

9/2+

68Ge

32

36

67.928094(7)

270.95(16) d

EC

68Ga

0+

69Ge

32

37

68.9279645(14)

39.05(10) h

β+

69Ga

5/2−

69m1Ge

86.765(14) keV

5.1(2) µs

1/2−

69m2Ge

397.944(18) keV

2.81(5) µs

9/2+

70Ge

32

38

69.9242474(11)

Stable

0+

0.2038(18)

71Ge

32

39

70.9249510(11)

11.43(3) d

EC

71Ga

1/2−

71mGe

198.367(10) keV

20.40(17) ms

IT

71Ge

9/2+

72Ge

32

40

71.9220758(18)

Stable

0+

0.2731(26)

72mGe

691.43(4) keV

444.2(8) ns

0+

73Ge

32

41

72.9234589(18)

Stable

9/2+

0.0776(8)

73m1Ge

13.2845(15) keV

2.92(3) µs

5/2+

73m2Ge

66.726(9) keV

499(11) ms

1/2−

74Ge

32

42

73.9211778(18)

Stable

0+

0.3672(15)

75Ge

32

43

74.9228589(18)

82.78(4) min

β−

75As

1/2−

75m1Ge

139.69(3) keV

47.7(5) s

IT (99.97%)

75Ge

7/2+

β−

75As

75m2Ge

192.18(7) keV

216(5) ns

5/2+

76Ge

32

44

75.9214026(18)

1.926(94)×1021 y

β−β−

76Se

0+

0.0783(7)

77Ge

32

45

76.9235486(18)

11.30(1) h

β−

77As

7/2+

77mGe

159.70(10) keV

52.9(6) s

β− (79%)

77As

1/2−

IT (21%)

77Ge

78Ge

32

46

77.922853(4)

88(1) min

β−

78As

0+

79Ge

32

47

78.9254(1)

18.98(3) s

β−

79As

(1/2)−

79mGe

185.95(4) keV

39.0(10) s

β− (96%)

79As

(7/2+)

IT (4%)

79Ge

80Ge

32

48

79.92537(3)

29.5(4) s

β−

80As

0+

81Ge

32

49

80.92882(13)

7.6(6) s

β−

81As

9/2+

81mGe

679.13(4) keV

7.6(6) s

β− (99%)

81As

(1/2+)

IT (1%)

81Ge

82Ge

32

50

81.92955(26)

4.55(5) s

β−

82As

0+

83Ge

32

51

82.93462(21)

1.85(6) s

β−

83As

(5/2+)

84Ge

32

52

83.93747(32)

0.947(11) s

β− (89.2%)

84As

0+

β−, n (10.8%)

83As

85Ge

32

53

84.94303(43)

535(47) ms

β− (86%)

85As

5/2+

β−, n (14%)

84As

86Ge

32

54

85.94649(54)

>150 ns

β−, n

85As

0+

β−

86As

87Ge

32

55

86.95251(54)

0.14 s

5/2+

88Ge

32

56

87.95691(75)

>=300 ns

0+

89Ge

32

57

88.96383(97)

>150 ns

3/2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

60As

33

27

59.99313(64)

p

59Ge

5+

61As

33

28

60.98062(64)

p

60Ge

3/2−

62As

33

29

61.97320(32)

p

61Ge

1+

63As

33

30

62.96369(54)

p

62Ge

(3/2−)

64As

33

31

63.95757(38)

40(30) ms
[18(+43-7) ms]

β+

64Ge

0+

65As

33

32

64.94956(32)

170(30) ms

β+

65Ge

3/2−

66As

33

33

65.94471(73)

95.77(23) ms

β+

66Ge

(0+)

66m1As

1356.70(17) keV

1.1(1) µs

(5+)

66m2As

3023.9(3) keV

8.2(5) µs

(9+)

67As

33

34

66.93919(11)

42.5(12) s

β+

67Ge

(5/2−)

68As

33

35

67.93677(5)

151.6(8) s

β+

68Ge

3+

68mAs

425.21(16) keV

111(20) ns
[?107(+23-16) ns]

1+

69As

33

36

68.93227(3)

15.2(2) min

β+

69Ge

5/2−

70As

33

37

69.93092(5)

52.6(3) min

β+

70Ge

4(+)

70mAs

32.008(23) keV

96(3) µs

2(+)

71As

33

38

70.927112(5)

65.28(15) h

β+

71Ge

5/2−

72As

33

39

71.926752(5)

26.0(1) h

β+

72Ge

2−

73As

33

40

72.923825(4)

80.30(6) d

EC

73Ge

3/2−

74As

33

41

73.9239287(25)

17.77(2) d

β+ (66%)

74Ge

2−

β− (34%)

74Se

75As

33

42

74.9215965(20)

Stable

3/2−

1.0000

75mAs

303.9241(7) keV

17.62(23) ms

9/2+

76As

33

43

75.922394(2)

1.0942(7) d

β− (99.98%)

76Se

2−

EC (.02%)

76Ge

76mAs

44.425(1) keV

1.84(6) µs

(1)+

77As

33

44

76.9206473(25)

38.83(5) h

β−

77mSe

3/2−

77mAs

475.443(16) keV

114.0(25) µs

9/2+

78As

33

45

77.921827(11)

90.7(2) min

β−

78Se

2−

79As

33

46

78.920948(6)

9.01(15) min

β−

79mSe

3/2−

79mAs

772.81(6) keV

1.21(1) µs

(9/2)+

80As

33

47

79.922534(25)

15.2(2) s

β−

80Se

1+

81As

33

48

80.922132(6)

33.3(8) s

β−

81mSe

3/2−

82As

33

49

81.92450(21)

19.1(5) s

β−

82Se

(1+)

82mAs

250(200) keV

13.6(4) s

β−

82Se

(5-)

83As

33

50

82.92498(24)

13.4(3) s

β−

83mSe

3/2−

84As

33

51

83.92906(32)

4.02(3) s

β− (99.721%)

84Se

(3)(+)

β−, n (.279%)

83Se

84mAs

0(100) keV

650(150) ms

85As

33

52

84.93202(21)

2.021(10) s

β−, n (59.4%)

84Se

(3/2−)

β− (40.6%)

85Se

86As

33

53

85.93650(32)

0.945(8) s

β− (67%)

86Se

β−, n (33%)

85Se

87As

33

54

86.93990(32)

0.56(8) s

β− (84.6%)

87Se

3/2−

β−, n (15.4%)

86Se

88As

33

55

87.94494(54)

300 ms
[>300 ns]

β−

88Se

β−, n

87Se

89As

33

56

88.94939(54)

200 ms
[>300 ns]

β−

89Se

3/2−

90As

33

57

89.95550(86)

80 ms
[>300 ns]

91As

33

58

90.96043(97)

50 ms
[>300 ns]

3/2−

92As

33

59

91.96680(97)

30 ms
[>300 ns]

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

65Se

34

31

64.96466(64)

<50 ms

β+ (>99.9%)

65As

3/2−

β+, p (<.1%)

64Ge

66Se

34

32

65.95521(32)

33(12) ms

β+

66As

0+

67Se

34

33

66.95009(21)

133(11) ms

β+ (99.5%)

67As

5/2−

β+, p (.5%)

66Ge

68Se

34

34

67.94180(4)

35.5(7) s

β+

68As

0+

69Se

34

35

68.93956(4)

27.4(2) s

β+ (99.955%)

69As

(1/2−)

β+, p (.045%)

68Ge

69m1Se

39.4(1) keV

2.0(2) µs

5/2−

69m2Se

573.9(10) keV

955(16) ns

9/2+

70Se

34

36

69.93339(7)

41.1(3) min

β+

70As

0+

71Se

34

37

70.93224(3)

4.74(5) min

β+

71As

5/2−

71m1Se

48.79(5) keV

5.6(7) µs

1/2− to 9/2−

71m2Se

260.48(10) keV

19.0(5) µs

(9/2)+

72Se

34

38

71.927112(13)

8.40(8) d

EC

72As

0+

73Se

34

39

72.926765(11)

7.15(8) h

β+

73As

9/2+

73mSe

25.71(4) keV

39.8(13) min

IT

73Se

3/2−

β+

73As

74Se

34

40

73.9224764(18)

Observationally Stable

0+

0.0089(4)

75Se

34

41

74.9225234(18)

119.779(4) d

EC

75As

5/2+

76Se

34

42

75.9192136(18)

Stable

0+

0.0937(29)

77Se

34

43

76.9199140(18)

Stable

1/2−

0.0763(16)

77mSe

161.9223(7) keV

17.36(5) s

IT

77Se

7/2+

78Se

34

44

77.9173091(18)

Stable

0+

0.2377(28)

79Se

34

45

78.9184991(18)

3.27(8)×105 y

β−

79Br

7/2+

79mSe

95.77(3) keV

3.92(1) min

IT (99.944%)

79Se

1/2−

β− (.056%)

79Br

80Se

34

46

79.9165213(21)

Observationally Stable

0+

0.4961(41)

81Se

34

47

80.9179925(22)

18.45(12) min

β−

81Br

1/2−

81mSe

102.99(6) keV

57.28(2) min

IT (99.948%)

81Se

7/2+

β− (.052%)

81Br

82Se

34

48

81.9166994(22)

0.97(5)×1020 y

β−β−

82Kr

0+

0.0873(22)

83Se

34

49

82.919118(4)

22.3(3) min

β−

83Br

9/2+

83mSe

228.50(20) keV

70.1(4) s

β−

83Br

1/2−

84Se

34

50

83.918462(16)

3.1(1) min

β−

84Br

0+

85Se

34

51

84.92225(3)

31.7(9) s

β−

85Br

(5/2+)

86Se

34

52

85.924272(17)

15.3(9) s

β−

86Br

0+

87Se

34

53

86.92852(4)

5.50(12) s

β− (99.64%)

87Br

(5/2+)

β−, n (.36%)

86Br

88Se

34

54

87.93142(5)

1.53(6) s

β− (99.01%)

88Br

0+

β−, n (.99%)

88Br

89Se

34

55

88.93645(32)

0.41(4) s

β− (92.2%)

89Br

(5/2+)

β−, n (7.8%)

88Br

90Se

34

56

89.93996(43)

300 ms [>300 ns]

β−, n

89Br

0+

β−

90Br

91Se

34

57

90.94596(54)

270(50) ms

β− (79%)

91Br

1/2+

β−, n

90Br

92Se

34

58

91.94992(64)

100 ms [>300 ns]

β−

92Br

0+

93Se

34

59

92.95629(86)

50 ms [>300 ns]

1/2+

94Se

34

60

93.96049(86)

20 ms [>300 ns]

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

66Br

35

31

p

65Se

67Br

35

32

66.96479(54)

p

66Se

1/2−

68Br

35

33

67.95852(38)

<1.2 µs

p

67Se

3+

69Br

35

34

68.95011(11)

<24 ns

p

68Se

1/2−

70Br

35

35

69.94479(33)

79.1(8) ms

β+

70Se

0+

70mBr

2292.2(8) keV

2.2(2) s

β+

70Se

(9+)

IT

70Br

71Br

35

36

70.93874(61)

21.4(6) s

β+

71Se

(5/2)−

72Br

35

37

71.93664(6)

78.6(24) s

β+

72Se

1+

72mBr

100.92(3) keV

10.6(3) s

IT (>99.9%)

72Br

1−

β+ (<0.1%)

72Se

73Br

35

38

72.93169(5)

3.4(2) min

β+

73Se

1/2−

74Br

35

39

73.929891(16)

25.4(3) min

β+

74Se

(0−)

74mBr

13.58(21) keV

46(2) min

β+

74Se

4(+)

75Br

35

40

74.925776(15)

96.7(13) min

β+

75Se

3/2−

76Br

35

41

75.924541(10)

16.2(2) h

β+

76Se

1−

76mBr

102.58(3) keV

1.31(2) s

IT (99.4%)

76Br

(4)+

β+ (0.6%)

76Se

77Br

35

42

76.921379(3)

57.036(6) h

β+

77Se

3/2−

77mBr

105.86(8) keV

4.28(10) min

IT

77Br

9/2+

78Br

35

43

77.921146(4)

6.46(4) min

β+ (99.99%)

78Se

1+

β− (0.01%)

78Kr

78mBr

180.82(13) keV

119.2(10) µs

(4+)

79Br

35

44

78.9183371(22)

Stable

3/2−

0.5069(7)

79mBr

207.61(9) keV

4.86(4) s

IT

79Br

(9/2+)

80Br

35

45

79.9185293(22)

17.68(2) min

β− (91.7%)

80Kr

1+

β+ (8.3%)

80Se

80mBr

85.843(4) keV

4.4205(8) h

IT

80Br

5−

81Br

35

46

80.9162906(21)

Stable

3/2−

0.4931(7)

81mBr

536.20(9) keV

34.6(28) µs

9/2+

82Br

35

47

81.9168041(21)

35.282(7) h

β−

82Kr

5−

82mBr

45.9492(10) keV

6.13(5) min

IT

82Br

2−

β−

82Kr

83Br

35

48

82.915180(5)

2.40(2) h

β−

83Kr

3/2−

83mBr

3068.8(6) keV

700(100) ns

(19/2−)

84Br

35

49

83.916479(16)

31.80(8) min

β−

84Kr

2−

84m1Br

320(10) keV

6.0(2) min

β−

84Kr

6−

84m2Br

408.2(4) keV

<140 ns

1+

85Br

35

50

84.915608(21)

2.90(6) min

β−

85Kr

3/2−

86Br

35

51

85.918798(12)

55.1(4) s

β−

86Kr

(2−)

87Br

35

52

86.920711(19)

55.65(13) s

β− (97.48%)

87Kr

3/2−

β−, n (2.52%)

86Kr

88Br

35

53

87.92407(4)

16.29(6) s

β− (93.42%)

88Kr

(2−)

β−, n (6.48%)

87Kr

88mBr

272.7(3) keV

5.4(7) µs

89Br

35

54

88.92639(6)

4.40(3) s

β− (86.2%)

89Kr

(3/2−,5/2−)

β−, n (13.8%)

88Kr

90Br

35

55

89.93063(8)

1.91(1) s

β− (74.8%)

90Kr

β−, n (25.2%)

89Kr

91Br

35

56

90.93397(8)

541(5) ms

β− (80%)

91Kr

3/2−

β−, n (20%)

90Kr

92Br

35

57

91.93926(5)

0.343(15) s

β− (66.9%)

92Kr

(2−)

β−, n (33.1%)

91Kr

93Br

35

58

92.94305(32)

102(10) ms

β− (89%)

93Kr

3/2−

β−, n (11%)

92Kr

94Br

35

59

93.94868(43)

70(20) ms

β− (70%)

94Kr

β−, n (30%)

93Kr

95Br

35

60

94.95287(54)

50 ms [>300 ns]

3/2−

96Br

35

61

95.95853(75)

20 ms [>300 ns]

97Br

35

62

96.96280(86)

10 ms [>300 ns]

3/2−

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

69Kr

36

33

68.96518(43)

32(10) ms

β+

69Br

5/2−

70Kr

36

34

69.95526(41)

52(17) ms

β+

70Br

0+

71Kr

36

35

70.94963(70)

100(3) ms

β+ (94.8%)

71Br

(5/2)−

β+, p (5.2%)

70Se

72Kr

36

36

71.942092(9)

17.16(18) s

β+

72Br

0+

73Kr

36

37

72.939289(7)

28.6(6) s

β+ (99.32%)

73Br

3/2−

β+, p (.68%)

72Se

73mKr

433.66(12) keV

107(10) ns

(9/2+)

74Kr

36

38

73.9330844(22)

11.50(11) min

β+

74Br

0+

75Kr

36

39

74.930946(9)

4.29(17) min

β+

75Br

5/2+

76Kr

36

40

75.925910(4)

14.8(1) h

β+

76Br

0+

77Kr

36

41

76.9246700(21)

74.4(6) min

β+

77Br

5/2+

78Kr

36

42

77.9203648(12)

9.2 +5.5
−2.6 ±1.3×1021 y

Double EC

78Se

0+

0.00355(3)

79Kr

36

43

78.920082(4)

35.04(10) h

β+

79Br

1/2−

79mKr

129.77(5) keV

50(3) s

7/2+

80Kr

36

44

79.9163790(16)

Stable

0+

0.02286(10)

81Kr

36

45

80.9165920(21)

2.29(11)×105 y

EC

81Br

7/2+

trace

81mKr

190.62(4) keV

13.10(3) s

IT (99.975%)

81Kr

1/2−

EC (.025%)

81Br

82Kr

36

46

81.9134836(19)

Stable

0+

0.11593(31)

83Kr

36

47

82.914136(3)

Stable

9/2+

0.11500(19)

83m1Kr

9.4053(8) keV

154.4(11) ns

7/2+

83m2Kr

41.5569(10) keV

1.83(2) h

IT

83Kr

1/2−

84Kr

36

48

83.911507(3)

Stable

0+

0.56987(15)

84mKr

3236.02(18) keV

1.89(4) µs

8+

85Kr

36

49

84.9125273(21)

10.776(3) y

β−

85Rb

9/2+

trace

85m1Kr

304.871(20) keV

4.480(8) h

β− (78.6%)

85Rb

1/2−

IT (21.4%)

85Kr

85m2Kr

1991.8(13) keV

1.6(7) µs
[1.2(+10-4) µs]

(17/2+)

86Kr

36

50

85.91061073(11)

Observationally Stable

0+

0.17279(41)

87Kr

36

51

86.91335486(29)

76.3(5) min

β−

87Rb

5/2+

88Kr

36

52

87.914447(14)

2.84(3) h

β−

88Rb

0+

89Kr

36

53

88.91763(6)

3.15(4) min

β−

89Rb

3/2(+)

90Kr

36

54

89.919517(20)

32.32(9) s

β−

90mRb

0+

91Kr

36

55

90.92345(6)

8.57(4) s

β−

91Rb

5/2(+)

92Kr

36

56

91.926156(13)

1.840(8) s

β− (99.96%)

92Rb

0+

β−, n (.033%)

91Rb

93Kr

36

57

92.93127(11)

1.286(10) s

β− (98.05%)

93Rb

1/2+

β−, n (1.95%)

92Rb

94Kr

36

58

93.93436(32)

210(4) ms

β− (94.3%)

94Rb

0+

β−, n (5.7%)

93Rb

95Kr

36

59

94.93984(43)

114(3) ms

β−

95Rb

1/2(+)

96Kr

36

60

95.94307(54)

80(7) ms

β−

96Rb

0+

97Kr

36

61

96.94856(54)

63(4) ms

β−

97Rb

3/2+

β−, n

96Rb

98Kr

36

62

97.95191(64)

46(8) ms

0+

99Kr

36

63

98.95760(64)

40(11) ms

(3/2+)

100Kr

36

64

99.96114(54)

10 ms
[>300 ns]

0+

101Kr

36

65

unknown

>635 ns

β−, 2n

99Rb

unknown

β−, n

100Rb

β−

101Rb

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

71Rb

37

34

70.96532(54)

p

70Kr

5/2−

72Rb

37

35

71.95908(54)

<1.5 µs

p

71Kr

3+

72mRb

100(100) keV

1 µs

p

71Kr

1−

73Rb

37

36

72.95056(16)

<30 ns

p

72Kr

3/2−

74Rb

37

37

73.944265(4)

64.76(3) ms

β+

74Kr

(0+)

75Rb

37

38

74.938570(8)

19.0(12) s

β+

75Kr

(3/2−)

76Rb

37

39

75.9350722(20)

36.5(6) s

β+

76Kr

1(−)

β+, α (3.8×10−7%)

72Se

76mRb

316.93(8) keV

3.050(7) µs

(4+)

77Rb

37

40

76.930408(8)

3.77(4) min

β+

77Kr

3/2−

78Rb

37

41

77.928141(8)

17.66(8) min

β+

78Kr

0(+)

78mRb

111.20(10) keV

5.74(5) min

β+ (90%)

78Kr

4(−)

IT (10%)

78Rb

79Rb

37

42

78.923989(6)

22.9(5) min

β+

79Kr

5/2+

80Rb

37

43

79.922519(7)

33.4(7) s

β+

80Kr

1+

80mRb

494.4(5) keV

1.6(2) µs

6+

81Rb

37

44

80.918996(6)

4.570(4) h

β+

81Kr

3/2−

81mRb

86.31(7) keV

30.5(3) min

IT (97.6%)

81Rb

9/2+

β+ (2.4%)

81Kr

82Rb

37

45

81.9182086(30)

1.273(2) min

β+

82Kr

1+

82mRb

69.0(15) keV

6.472(5) h

β+ (99.67%)

82Kr

5−

IT (.33%)

82Rb

83Rb

37

46

82.915110(6)

86.2(1) d

EC

83Kr

5/2−

83mRb

42.11(4) keV

7.8(7) ms

IT

83Rb

9/2+

84Rb

37

47

83.914385(3)

33.1(1) d

β+ (96.2%)

84Kr

2−

β− (3.8%)

84Sr

84mRb

463.62(9) keV

20.26(4) min

IT (>99.9%)

84Rb

6−

β+ (<.1%)

84Kr

85Rb

37

48

84.911789738(12)

Stable

5/2−

0.7217(2)

86Rb

37

49

85.91116742(21)

18.642(18) d

β− (99.9948%)

86Sr

2−

EC (.0052%)

86Kr

86mRb

556.05(18) keV

1.017(3) min

IT

86Rb

6−

87Rb

37

50

86.909180527(13)

4.923(22)×1010 y

β−

87Sr

3/2−

0.2783(2)

88Rb

37

51

87.91131559(17)

17.773(11) min

β−

88Sr

2−

89Rb

37

52

88.912278(6)

15.15(12) min

β−

89Sr

3/2−

90Rb

37

53

89.914802(7)

158(5) s

β−

90Sr

0−

90mRb

106.90(3) keV

258(4) s

β− (97.4%)

90Sr

3−

IT (2.6%)

90 Rb

91Rb

37

54

90.916537(9)

58.4(4) s

β−

91Sr

3/2(−)

92Rb

37

55

91.919729(7)

4.492(20) s

β− (99.98%)

92Sr

0−

β−, n (.0107%)

91Sr

93Rb

37

56

92.922042(8)

5.84(2) s

β− (98.65%)

93Sr

5/2−

β−, n (1.35%)

92Sr

93mRb

253.38(3) keV

57(15) µs

(3/2−,5/2−)

94Rb

37

57

93.926405(9)

2.702(5) s

β− (89.99%)

94Sr

3(−)

β−, n (10.01%)

93Sr

95Rb

37

58

94.929303(23)

377.5(8) ms

β− (91.27%)

95Sr

5/2−

β−, n (8.73%)

94Sr

96Rb

37

59

95.93427(3)

202.8(33) ms

β− (86.6%)

96Sr

2+

β−, n (13.4%)

95Sr

96mRb

0(200) keV

200 ms [>1 ms]

β−

96Sr

1(−)

IT

96Rb

β−, n

95Sr

97Rb

37

60

96.93735(3)

169.9(7) ms

β− (74.3%)

97Sr

3/2+

β−, n (25.7%)

96Sr

98Rb

37

61

97.94179(5)

114(5) ms

β−(86.14%)

98Sr

(0,1)(−)

β−, n (13.8%)

97Sr

β−, 2n (.051%)

96Sr

98mRb

290(130) keV

96(3) ms

β−

97Sr

(3,4)(+)

99Rb

37

62

98.94538(13)

50.3(7) ms

β− (84.1%)

99Sr

(5/2+)

β−, n (15.9%)

98Sr

100Rb

37

63

99.94987(32)

51(8) ms

β− (94.25%)

100Sr

(3+)

β−, n (5.6%)

99Sr

β−, 2n (.15%)

98Sr

101Rb

37

64

100.95320(18)

32(5) ms

β− (69%)

101Sr

(3/2+)

β−, n (31%)

100Sr

102Rb

37

65

101.95887(54)

37(5) ms

β− (82%)

102Sr

β−, n (18%)

101Sr

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

73Sr

38

35

72.96597(64)

>25 ms

β+ (>99.9%)

73Rb

1/2−

β+, p (<.1%)

72Kr

74Sr

38

36

73.95631(54)

50 ms [>1.5 µs]

β+

74Rb

0+

75Sr

38

37

74.94995(24)

88(3) ms

β+ (93.5%)

75Rb

(3/2−)

β+, p (6.5%)

74Kr

76Sr

38

38

75.94177(4)

7.89(7) s

β+

76Rb

0+

77Sr

38

39

76.937945(10)

9.0(2) s

β+ (99.75%)

77Rb

5/2+

β+, p (.25%)

76Kr

78Sr

38

40

77.932180(8)

159(8) s

β+

78Rb

0+

79Sr

38

41

78.929708(9)

2.25(10) min

β+

79Rb

3/2(−)

80Sr

38

42

79.924521(7)

106.3(15) min

β+

80Rb

0+

81Sr

38

43

80.923212(7)

22.3(4) min

β+

81Rb

1/2−

82Sr

38

44

81.918402(6)

25.36(3) d

EC

82Rb

0+

83Sr

38

45

82.917557(11)

32.41(3) h

β+

83Rb

7/2+

83mSr

259.15(9) keV

4.95(12) s

IT

83Sr

1/2−

84Sr

38

46

83.913425(3)

Observationally Stable

0+

0.0056(1)

0.0055–0.0058

85Sr

38

47

84.912933(3)

64.853(8) d

EC

85Rb

9/2+

85mSr

238.66(6) keV

67.63(4) min

IT (86.6%)

85Sr

1/2−

β+ (13.4%)

85Rb

86Sr

38

48

85.9092607309(91)

Stable

0+

0.0986(1)

0.0975–0.0999

86mSr

2955.68(21) keV

455(7) ns

8+

87Sr

38

49

86.9088774970(91)

Stable

9/2+

0.0700(1)

0.0694–0.0714

87mSr

388.533(3) keV

2.815(12) h

IT (99.7%)

87Sr

1/2−

EC (.3%)

87Rb

88Sr

38

50

87.9056122571(97)

Stable

0+

0.8258(1)

0.8229–0.8275

89Sr

38

51

88.9074507(12)

50.57(3) d

β−

89Y

5/2+

90Sr

38

52

89.907738(3)

28.90(3) y

β−

90Y

0+

91Sr

38

53

90.910203(5)

9.63(5) h

β−

91Y

5/2+

92Sr

38

54

91.911038(4)

2.66(4) h

β−

92Y

0+

93Sr

38

55

92.914026(8)

7.423(24) min

β−

93Y

5/2+

94Sr

38

56

93.915361(8)

75.3(2) s

β−

94Y

0+

95Sr

38

57

94.919359(8)

23.90(14) s

β−

95Y

1/2+

96Sr

38

58

95.921697(29)

1.07(1) s

β−

96Y

0+

97Sr

38

59

96.926153(21)

429(5) ms

β− (99.95%)

97Y

1/2+

β−, n (.05%)

96Y

97m1Sr

308.13(11) keV

170(10) ns

(7/2)+

97m2Sr

830.8(2) keV

255(10) ns

(11/2−)

98Sr

38

60

97.928453(28)

0.653(2) s

β− (99.75%)

98Y

0+

β−, n (.25%)

97Y

99Sr

38

61

98.93324(9)

0.269(1) s

β− (99.9%)

99Y

3/2+

β−, n (.1%)

98Y

100Sr

38

62

99.93535(14)

202(3) ms

β− (99.02%)

100Y

0+

β−, n (.98%)

99Y

101Sr

38

63

100.94052(13)

118(3) ms

β− (97.63%)

101Y

(5/2−)

β−, n (2.37%)

100Y

102Sr

38

64

101.94302(12)

69(6) ms

β− (94.5%)

102Y

0+

β−, n (5.5%)

101Y

103Sr

38

65

102.94895(54)

50 ms [>300 ns]

β−

103Y

104Sr

38

66

103.95233(75)

30 ms [>300 ns]

β−

104Y

0+

105Sr

38

67

104.95858(75)

20 ms [>300 ns]

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

excitation energy

76Y

39

37

75.95845(54)

500 ns [>170 ns]

77Y

39

38

76.94965(7)

63(17) ms

p (>99.9%)

76Sr

5/2+

β+ (<.1%)

77Sr

78Y

39

39

77.94361(43)

54(5) ms

β+

78Sr

(0+)

78mY

0(500) keV

5.8(5) s

5+

79Y

39

40

78.93735(48)

14.8(6) s

β+ (>99.9%)

79Sr

(5/2+)

β+, p (<.1%)

78Rb

80Y

39

41

79.93428(19)

30.1(5) s

β+

80Sr

4−

80m1Y

228.5(1) keV

4.8(3) s

(1−)

80m2Y

312.6(9) keV

4.7(3) µs

(2+)

81Y

39

42

80.92913(7)

70.4(10) s

β+

81Sr

(5/2+)

82Y

39

43

81.92679(11)

8.30(20) s

β+

82Sr

1+

82m1Y

402.63(14) keV

268(25) ns

4−

82m2Y

507.50(13) keV

147(7) ns

6+

83Y

39

44

82.92235(5)

7.08(6) min

β+

83Sr

9/2+

83mY

61.98(11) keV

2.85(2) min

β+ (60%)

83Sr

(3/2−)

IT (40%)

83Y

84Y

39

45

83.92039(10)

39.5(8) min

β+

84Sr

1+

84mY

−80(190) keV

4.6(2) s

β+

84Sr

(5−)

85Y

39

46

84.916433(20)

2.68(5) h

β+

85Sr

(1/2)−

85m1Y

19.8(5) keV

4.86(13) h

β+ (99.998%)

85Sr

9/2+

IT (.002%)

85Y

85m2Y

266.30(20) keV

178(6) ns

5/2−

86Y

39

47

85.914886(15)

14.74(2) h

β+

86Sr

4−

86m1Y

218.30(20) keV

48(1) min

IT (99.31%)

86Y

(8+)

β+ (.69%)

86Sr

86m2Y

302.2(5) keV

125(6) ns

(7−)

87Y

39

48

86.9108757(17)

79.8(3) h

β+

87Sr

1/2−

87mY

380.82(7) keV

13.37(3) h

IT (98.43%)

87Y

9/2+

β+ (1.56%)

87Sr

88Y

39

49

87.9095011(20)

106.616(13) d

β+

88Sr

4−

88m1Y

674.55(4) keV

13.9(2) ms

IT

88Y

(8)+

88m2Y

392.86(9) keV

300(3) µs

1+

89Y

39

50

88.9058483(27)

Stable

1/2−

1.0000

89mY

908.97(3) keV

15.663(5) s

IT

89Y

9/2+

90Y

39

51

89.9071519(27)

64.053(20) h

β−

90Zr

2−

90mY

681.67(10) keV

3.19(6) h

IT (99.99%)

90Y

7+

β− (.0018%)

90Zr

91Y

39

52

90.907305(3)

58.51(6) d

β−

91Zr

1/2−

91mY

555.58(5) keV

49.71(4) min

IT (98.5%)

91Y

9/2+

β− (1.5%)

91Zr

92Y

39

53

91.908949(10)

3.54(1) h

β−

92Zr

2−

93Y

39

54

92.909583(11)

10.18(8) h

β−

93Zr

1/2−

93mY

758.719(21) keV

820(40) ms

IT

93Y

7/2+

94Y

39

55

93.911595(8)

18.7(1) min

β−

94Zr

2−

95Y

39

56

94.912821(8)

10.3(1) min

β−

95Zr

1/2−

96Y

39

57

95.915891(25)

5.34(5) s

β−

96Zr

0−

96mY

1140(30) keV

9.6(2) s

β−

96Zr

(8)+

97Y

39

58

96.918134(13)

3.75(3) s

β− (99.942%)

97Zr

(1/2−)

β−, n (.058%)

96Zr

97m1Y

667.51(23) keV

1.17(3) s

β− (99.3%)

97Zr

(9/2)+

IT (.7%)

97Y

β−, n (.08%)

96Zr

97m2Y

3523.3(4) keV

142(8) ms

(27/2−)

98Y

39

59

97.922203(26)

0.548(2) s

β− (99.669%)

98Zr

(0)−

β−, n (.331%)

97Zr

98m1Y

170.74(6) keV

620(80) ns

(2)−

98m2Y

410(30) keV

2.0(2) s

β− (86.6%)

98Zr

(5+,4−)

IT (10%)

98Y

β−, n (3.4%)

97Zr

98m3Y

496.19(15) keV

7.6(4) µs

(2−)

98m4Y

1181.1(4) keV

0.83(10) µs

(8−)

99Y

39

60

98.924636(26)

1.470(7) s

β− (98.1%)

99Zr

(5/2+)

β−, n (1.9%)

98Zr

99mY

2141.65(19) keV

8.6(8) µs

(17/2+)

100Y

39

61

99.92776(8)

735(7) ms

β− (98.98%)

100Zr

1−,2−

β−, n (1.02%)

99Zr

100mY

200(200) keV

940(30) ms

β−

100Zr

(3,4,5)(+)

101Y

39

62

100.93031(10)

426(20) ms

β− (98.06%)

101Zr

(5/2+)

β−, n (1.94%)

100Zr

102Y

39

63

101.93356(9)

0.30(1) s

β− (95.1%)

102Zr

β−, n (4.9%)

101Zr

102mY

200(200) keV

360(40) ms

β− (94%)

102Zr

high

β−, n (6%)

101Zr

103Y

39

64

102.93673(32)

224(19) ms

β− (91.7%)

103Zr

5/2+

β−, n (8.3%)

102Zr

104Y

39

65

103.94105(43)

180(60) ms

β−

104Zr

105Y

39

66

104.94487(54)

60 ms [>300 ns]

β−

105Zr

5/2+

106Y

39

67

105.94979(75)

50 ms [>300 ns]

β−

106Zr

107Y

39

68

106.95414(54)

30 ms [>300 ns]

5/2+

108Y

39

69

107.95948(86)

20 ms [>300 ns]

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

78Zr

40

38

77.95523(54)

50 ms
[>170 ns]

0+

79Zr

40

39

78.94916(43)

56(30) ms

β+, p

78Sr

5/2+

β+

79Y

80Zr

40

40

79.9404(16)

4.6(6) s

β+

80Y

0+

81Zr

40

41

80.93721(18)

5.5(4) s

β+ (>99.9%)

81Y

(3/2−)

β+, p (<.1%)

80Sr

82Zr

40

42

81.93109(24)

32(5) s

β+

82Y

0+

83Zr

40

43

82.92865(10)

41.6(24) s

β+ (>99.9%)

83Y

(1/2−)

β+, p (<.1%)

82Sr

84Zr

40

44

83.92325(21)

25.9(7) min

β+

84Y

0+

85Zr

40

45

84.92147(11)

7.86(4) min

β+

85Y

7/2+

85mZr

292.2(3) keV

10.9(3) s

IT (92%)

85Zr

(1/2−)

β+ (8%)

85Y

86Zr

40

46

85.91647(3)

16.5(1) h

β+

86Y

0+

87Zr

40

47

86.914816(9)

1.68(1) h

β+

87Y

(9/2)+

87mZr

335.84(19) keV

14.0(2) s

IT

87Zr

(1/2)−

88Zr

40

48

87.910227(11)

83.4(3) d

EC

88Y

0+

89Zr

40

49

88.908890(4)

78.41(12) h

β+

89Y

9/2+

89mZr

587.82(10) keV

4.161(17) min

IT (93.77%)

89Zr

1/2−

β+ (6.23%)

89Y

90Zr

40

50

89.9047044(25)

Stable

0+

0.5145(40)

90m1Zr

2319.000(10) keV

809.2(20) ms

IT

90Zr

5-

90m2Zr

3589.419(16) keV

131(4) ns

8+

91Zr

40

51

90.9056458(25)

Stable

5/2+

0.1122(5)

91mZr

3167.3(4) keV

4.35(14) µs

(21/2+)

92Zr

40

52

91.9050408(25)

Stable

0+

0.1715(8)

93Zr

40

53

92.9064760(25)

1.53(10)×106 y

β−

93Nb

5/2+

94Zr

40

54

93.9063152(26)

Observationally Stable

0+

0.1738(28)

95Zr

40

55

94.9080426(26)

64.032(6) d

β−

95Nb

5/2+

96Zr

40

56

95.9082734(30)

20(4)×1018 y

β−β−

96Mo

0+

0.0280(9)

97Zr

40

57

96.9109531(30)

16.744(11) h

β−

97mNb

1/2+

98Zr

40

58

97.912735(21)

30.7(4) s

β−

98Nb

0+

99Zr

40

59

98.916512(22)

2.1(1) s

β−

99mNb

1/2+

100Zr

40

60

99.91776(4)

7.1(4) s

β−

100Nb

0+

101Zr

40

61

100.92114(3)

2.3(1) s

β−

101Nb

3/2+

102Zr

40

62

101.92298(5)

2.9(2) s

β−

102Nb

0+

103Zr

40

63

102.92660(12)

1.3(1) s

β−

103Nb

(5/2−)

104Zr

40

64

103.92878(43)

1.2(3) s

β−

104Nb

0+

105Zr

40

65

104.93305(43)

0.6(1) s

β− (>99.9%)

105Nb

β−, n (<.1%)

104Nb

106Zr

40

66

105.93591(54)

200 ms
[>300 ns]

β−

106Nb

0+

107Zr

40

67

106.94075(32)

150 ms
[>300 ns]

β−

107Nb

108Zr

40

68

107.94396(64)

80 ms
[>300 ns]

β−

108Nb

0+

109Zr

40

69

108.94924(54)

60 ms
[>300 ns]

110Zr

40

70

109.95287(86)

30 ms
[>300 ns]

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

81Nb

41

40

80.94903(161)

<44 ns

β+, p

80Y

3/2−

p

80Zr

β+

81Zr

82Nb

41

41

81.94313(32)

51(5) ms

β+

82Zr

0+

83Nb

41

42

82.93671(34)

4.1(3) s

β+

83Zr

(5/2+)

84Nb

41

43

83.93357(32)

9.8(9) s

β+ (>99.9%)

84Zr

3+

β+, p (<.1%)

83Y

84mNb

338(10) keV

103(19) ns

(5−)

85Nb

41

44

84.92791(24)

20.9(7) s

β+

85Zr

(9/2+)

85mNb

759.0(10) keV

12(5) s

(1/2−)

86Nb

41

45

85.92504(9)

88(1) s

β+

86Zr

(6+)

86mNb

250(160) keV

56(8) s

β+

86Zr

high

87Nb

41

46

86.92036(7)

3.75(9) min

β+

87Zr

(1/2−)

87mNb

3.84(14) keV

2.6(1) min

β+

87Zr

(9/2+)

88Nb

41

47

87.91833(11)

14.55(6) min

β+

88Zr

(8+)

88mNb

40(140) keV

7.8(1) min

β+

88Zr

(4−)

89Nb

41

48

88.913418(29)

2.03(7) h

β+

89Zr

(9/2+)

89mNb

0(30) keV

1.10(3) h

β+

89Zr

(1/2)−

90Nb

41

49

89.911265(5)

14.60(5) h

β+

90Zr

8+

90m1Nb

122.370(22) keV

63(2) µs

6+

90m2Nb

124.67(25) keV

18.81(6) s

IT

90Nb

4-

90m3Nb

171.10(10) keV

<1 µs

7+

90m4Nb

382.01(25) keV

6.19(8) ms

1+

90m5Nb

1880.21(20) keV

472(13) ns

(11−)

91Nb

41

50

90.906996(4)

680(130) a

EC (99.98%)

91Zr

9/2+

β+ (.013%)

91Zr

91m1Nb

104.60(5) keV

60.86(22) d

IT (93%)

91Nb

1/2−

EC (7%)

91Zr

β+ (.0028%)

91Zr

91m2Nb

2034.35(19) keV

3.76(12) µs

(17/2−)

92Nb

41

51

91.907194(3)

3.47(24)×107 a

β+ (99.95%)

92Zr

(7)+

β− (.05%)

92Mo

92m1Nb

135.5(4) keV

10.15(2) d

β+

92Zr

(2)+

92m2Nb

225.7(4) keV

5.9(2) µs

(2)−

92m3Nb

2203.3(4) keV

167(4) ns

(11−)

93Nb

41

52

92.9063781(26)

Stable

9/2+

1.0000

93mNb

30.77(2) keV

16.13(14) a

IT

93Nb

1/2−

94Nb

41

53

93.9072839(26)

2.03(16)×104 a

β−

94Mo

(6)+

94mNb

40.902(12) keV

6.263(4) min

IT (99.5%)

94Nb

3+

β− (.5%)

94Mo

95Nb

41

54

94.9068358(21)

34.991(6) d

β−

95Mo

9/2+

95mNb

235.690(20) keV

3.61(3) d

IT (94.4%)

95Nb

1/2−

β− (5.6%)

95Mo

96Nb

41

55

95.908101(4)

23.35(5) h

β−

96Mo

6+

97Nb

41

56

96.9080986(27)

72.1(7) min

β−

97Mo

9/2+

97mNb

743.35(3) keV

52.7(18) s

IT

97Nb

1/2−

98Nb

41

57

97.910328(6)

2.86(6) s

β−

98Mo

1+

98mNb

84(4) keV

51.3(4) min

β− (99.9%)

98Mo

(5+)

IT (.1%)

98Nb

99Nb

41

58

98.911618(14)

15.0(2) s

β−

99Mo

9/2+

99mNb

365.29(14) keV

2.6(2) min

β− (96.2%)

99Mo

1/2−

IT (3.8%)

99Nb

100Nb

41

59

99.914182(28)

1.5(2) s

β−

100Mo

1+

100mNb

470(40) keV

2.99(11) s

β−

100Mo

(4+,5+)

101Nb

41

60

100.915252(20)

7.1(3) s

β−

101Mo

(5/2)+

102Nb

41

61

101.91804(4)

1.3(2) s

β−

102Mo

1+

102mNb

130(50) keV

4.3(4) s

β−

102Mo

high

103Nb

41

62

102.91914(7)

1.5(2) s

β−

103Mo

(5/2+)

104Nb

41

63

103.92246(11)

4.9(3) s

β− (99.94%)

104Mo

(1+)

β−, n (.06%)

103Mo

104mNb

220(120) keV

940(40) ms

β− (99.95%)

104Mo

high

β−, n (.05%)

103Mo

105Nb

41

64

104.92394(11)

2.95(6) s

β− (98.3%)

105Mo

(5/2+)

β−, n (1.7%)

104Mo

106Nb

41

65

105.92797(21)

920(40) ms

β− (95.5%)

106Mo

2+

β−, n (4.5%)

105Mo

107Nb

41

66

106.93031(43)

300(9) ms

β− (94%)

107Mo

5/2+

β−, n (6%)

106Mo

108Nb

41

67

107.93484(32)

0.193(17) s

β− (93.8%)

108Mo

(2+)

β−, n (6.2%)

107Mo

109Nb

41

68

108.93763(54)

190(30) ms

β− (69%)

109Mo

5/2+

β−, n (69%)

108Mo

110Nb

41

69

109.94244(54)

170(20) ms

β− (60%)

110Mo

2+

β−, n (40%)

109Mo

111Nb

41

70

110.94565(54)

80 ms [>300 ns]

5/2+

112Nb

41

71

111.95083(75)

60 ms [>300 ns]

2+

113Nb

41

72

112.95470(86)

30 ms [>300 ns]

5/2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

83Mo

42

41

82.94874(54)

23(19) ms
[6(+30-3) ms]

β+

83Nb

3/2−

β+, p

82Zr

84Mo

42

42

83.94009(43)

3.8(9) ms
[3.7(+10-8) s]

β+

84Nb

0+

85Mo

42

43

84.93655(30)

3.2(2) s

β+

85Nb

(1/2−)

86Mo

42

44

85.93070(47)

19.6(11) s

β+

86Nb

0+

87Mo

42

45

86.92733(24)

14.05(23) s

β+ (85%)

87Nb

7/2+

β+, p (15%)

86Zr

88Mo

42

46

87.921953(22)

8.0(2) min

β+

88Nb

0+

89Mo

42

47

88.919480(17)

2.11(10) min

β+

89Nb

(9/2+)

89mMo

387.5(2) keV

190(15) ms

IT

89Mo

(1/2−)

90Mo

42

48

89.913937(7)

5.56(9) h

β+

90Nb

0+

90mMo

2874.73(15) keV

1.12(5) µs

8+

91Mo

42

49

90.911750(12)

15.49(1) min

β+

91Nb

9/2+

91mMo

653.01(9) keV

64.6(6) s

IT (50.1%)

91Mo

1/2−

β+ (49.9%)

91Nb

92Mo

42

50

91.906811(4)

Observationally Stable

0+

0.14649(106)

92mMo

2760.46(16) keV

190(3) ns

8+

93Mo

42

51

92.906813(4)

4,000(800) y

EC

93Nb

5/2+

93mMo

2424.89(3) keV

6.85(7) h

IT (99.88%)

93Mo

21/2+

β+ (.12%)

93Nb

94Mo

42

52

93.9050883(21)

Stable

0+

0.09187(33)

95Mo

42

53

94.9058421(21)

Stable

5/2+

0.15873(30)

96Mo

42

54

95.9046795(21)

Stable

0+

0.16673(30)

97Mo

42

55

96.9060215(21)

Stable

5/2+

0.09582(15)

98Mo

42

56

97.90540482(21)

Observationally Stable

0+

0.24292(80)

99Mo

42

57

98.9077119(21)

2.7489(6) d

β−

99mTc

1/2+

99m1Mo

97.785(3) keV

15.5(2) µs

5/2+

99m2Mo

684.5(4) keV

0.76(6) µs

11/2−

100Mo

42

58

99.907477(6)

8.5(5)×1018 a

β−β−

100Ru

0+

0.09744(65)

101Mo

42

59

100.910347(6)

14.61(3) min

β−

101Tc

1/2+

102Mo

42

60

101.910297(22)

11.3(2) min

β−

102Tc

0+

103Mo

42

61

102.91321(7)

67.5(15) s

β−

103Tc

(3/2+)

104Mo

42

62

103.91376(6)

60(2) s

β−

104Tc

0+

105Mo

42

63

104.91697(8)

35.6(16) s

β−

105Tc

(5/2−)

106Mo

42

64

105.918137(19)

8.73(12) s

β−

106Tc

0+

107Mo

42

65

106.92169(17)

3.5(5) s

β−

107Tc

(7/2−)

107mMo

66.3(2) keV

470(30) ns

(5/2−)

108Mo

42

66

107.92345(21)

1.09(2) s

β−

108Tc

0+

109Mo

42

67

108.92781(32)

0.53(6) s

β−

109Tc

(7/2−)

110Mo

42

68

109.92973(43)

0.27(1) s

β− (>99.9%)

110Tc

0+

β−, n (<.1%)

109Tc

111Mo

42

69

110.93441(43)

200 ms
[>300 ns]

β−

111Tc

112Mo

42

70

111.93684(64)

150 ms
[>300 ns]

β−

112Tc

0+

113Mo

42

71

112.94188(64)

100 ms
[>300 ns]

β−

113Tc

114Mo

42

72

113.94492(75)

80 ms
[>300 ns]

0+

115Mo

42

73

114.95029(86)

60 ms
[>300 ns]

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

85Tc

43

42

84.94883(43)

<110 ns

β+

85Mo

1/2−

p

84Mo

β+, p

84Nb

86Tc

43

43

85.94288(32)

55(6) ms

β+

86Mo

(0+)

86mTc

1500(150) keV

1.11(21) µs

(5+,5−)

87Tc

43

44

86.93653(32)

2.18(16) s

β+

87Mo

1/2−

87mTc

20(60) keV

2 s

9/2+

88Tc

43

45

87.93268(22)

5.8(2) s

β+

88Mo

(2,3)

88mTc

0(300) keV

6.4(8) s

β+

88Mo

(6,7,8)

89Tc

43

46

88.92717(22)

12.8(9) s

β+

89Mo

(9/2+)

89mTc

62.6(5) keV

12.9(8) s

β+

89Mo

(1/2−)

90Tc

43

47

89.92356(26)

8.7(2) s

β+

90Mo

1+

90mTc

310(390) keV

49.2(4) s

β+

90Mo

(8+)

91Tc

43

48

90.91843(22)

3.14(2) min

β+

91Mo

(9/2)+

91mTc

139.3(3) keV

3.3(1) min

β+ (99%)

91Mo

(1/2)−

IT (1%)

91Tc

92Tc

43

49

91.915260(28)

4.25(15) min

β+

92Mo

(8)+

92mTc

270.15(11) keV

1.03(7) µs

(4+)

93Tc

43

50

92.910249(4)

2.75(5) h

β+

93Mo

9/2+

93m1Tc

391.84(8) keV

43.5(10) min

IT (76.6%)

93Tc

1/2−

β+ (23.4%)

93Mo

93m2Tc

2185.16(15) keV

10.2(3) µs

(17/2)−

94Tc

43

51

93.909657(5)

293(1) min

β+

94Mo

7+

94mTc

75.5(19) keV

52.0(10) min

β+ (99.9%)

94Mo

(2)+

IT (.1%)

94Tc

95Tc

43

52

94.907657(6)

20.0(1) h

β+

95Mo

9/2+

95mTc

38.89(5) keV

61(2) d

β+ (96.12%)

95Mo

1/2−

IT (3.88%)

95Tc

96Tc

43

53

95.907871(6)

4.28(7) d

β+

96Mo

7+

96mTc

34.28(7) keV

51.5(10) min

IT (98%)

96Tc

4+

β+ (2%)

96Mo

97Tc

43

54

96.906365(5)

4.21×106 a

EC

97Mo

9/2+

97mTc

96.56(6) keV

91.0(6) d

IT (99.66%)

97Tc

1/2−

EC (.34%)

97Mo

98Tc

43

55

97.907216(4)

4.2×106 a

β−

98Ru

(6)+

98mTc

90.76(16) keV

14.7(3) µs

(2)−

99Tc

43

56

98.9062547(21)

2.111(12)×105 a

β−

99Ru

9/2+

99mTc

142.6832(11) keV

6.0067(5) h

IT (99.99%)

99Tc

1/2−

β− (.0037%)

99Ru

100Tc

43

57

99.9076578(24)

15.8(1) s

β− (99.99%)

100Ru

1+

EC (.0018%)

100Mo

100m1Tc

200.67(4) keV

8.32(14) µs

(4)+

100m2Tc

243.96(4) keV

3.2(2) µs

(6)+

101Tc

43

58

100.907315(26)

14.22(1) min

β−

101Ru

9/2+

101mTc

207.53(4) keV

636(8) µs

1/2−

102Tc

43

59

101.909215(10)

5.28(15) s

β−

102Ru

1+

102mTc

20(10) keV

4.35(7) min

β− (98%)

102Ru

(4,5)

IT (2%)

102Tc

103Tc

43

60

102.909181(11)

54.2(8) s

β−

103Ru

5/2+

104Tc

43

61

103.91145(5)

18.3(3) min

β−

104Ru

(3+)

104m1Tc

69.7(2) keV

3.5(3) µs

2(+)

104m2Tc

106.1(3) keV

0.40(2) µs

(+)

105Tc

43

62

104.91166(6)

7.6(1) min

β−

105Ru

(3/2−)

106Tc

43

63

105.914358(14)

35.6(6) s

β−

106Ru

(1,2)

107Tc

43

64

106.91508(16)

21.2(2) s

β−

107Ru

(3/2−)

107mTc

65.7(10) keV

184(3) ns

(5/2−)

108Tc

43

65

107.91846(14)

5.17(7) s

β−

108Ru

(2)+

109Tc

43

66

108.91998(10)

860(40) ms

β− (99.92%)

109Ru

3/2−

β−, n (.08%)

108Ru

110Tc

43

67

109.92382(8)

0.92(3) s

β− (99.96%)

110Ru

(2+)

β−, n (.04%)

109Ru

111Tc

43

68

110.92569(12)

290(20) ms

β− (99.15%)

111Ru

3/2−

β−, n (.85%)

110Ru

112Tc

43

69

111.92915(13)

290(20) ms

β− (97.4%)

112Ru

2+

β−, n (2.6%)

111Ru

113Tc

43

70

112.93159(32)

170(20) ms

β−

113Ru

3/2−

114Tc

43

71

113.93588(64)

150(30) ms

β−

114Ru

2+

115Tc

43

72

114.93869(75)

100 ms [>300 ns]

β−

115Ru

3/2−

116Tc

43

73

115.94337(75)

90 ms [>300 ns]

2+

117Tc

43

74

116.94648(75)

40 ms [>300 ns]

3/2−

118Tc

43

75

117.95148(97)

30 ms [>300 ns]

2+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

87Ru

44

43

86.94918(64)

50 ms [>1.5 µs]

β+

87Tc

1/2−

88Ru

44

44

87.94026(43)

1.3(3) s [1.2(+3−2) s]

β+

88Tc

0+

89Ru

44

45

88.93611(54)

1.38(11) s

β+

89Tc

(7/2)(+)

90Ru

44

46

89.92989(32)

11.7(9) s

β+

90Tc

0+

91Ru

44

47

90.92629(63)

7.9(4) s

β+

91Tc

(9/2+)

91mRu

80(300) keV

7.6(8) s

β+ (>99.9%)

91Tc

(1/2−)

IT (<.1%)

91Ru

β+, p (<.1%)

90Mo

92Ru

44

48

91.92012(32)

3.65(5) min

β+

92Tc

0+

93Ru

44

49

92.91705(9)

59.7(6) s

β+

93Tc

(9/2)+

93m1Ru

734.40(10) keV

10.8(3) s

β+ (78%)

93Tc

(1/2)−

IT (22%)

93Ru

β+, p (.027%)

92Mo

93m2Ru

2082.6(9) keV

2.20(17) µs

(21/2)+

94Ru

44

50

93.911360(14)

51.8(6) min

β+

94Tc

0+

94mRu

2644.55(25) keV

71(4) µs

(8+)

95Ru

44

51

94.910413(13)

1.643(14) h

β+

95Tc

5/2+

96Ru

44

52

95.907598(8)

Observationally Stable

0+

0.0554(14)

97Ru

44

53

96.907555(9)

2.791(4) d

β+

97mTc

5/2+

98Ru

44

54

97.905287(7)

Stable

0+

0.0187(3)

99Ru

44

55

98.9059393(22)

Stable

5/2+

0.1276(14)

100Ru

44

56

99.9042195(22)

Stable

0+

0.1260(7)

101Ru

44

57

100.9055821(22)

Stable

5/2+

0.1706(2)

101mRu

527.56(10) keV

17.5(4) µs

11/2−

102Ru

44

58

101.9043493(22)

Stable

0+

0.3155(14)

103Ru

44

59

102.9063238(22)

39.26(2) d

β−

103Rh

3/2+

103mRu

238.2(7) keV

1.69(7) ms

IT

103Ru

11/2−

104Ru

44

60

103.905433(3)

Observationally Stable

0+

0.1862(27)

105Ru

44

61

104.907753(3)

4.44(2) h

β−

105Rh

3/2+

106Ru

44

62

105.907329(8)

373.59(15) d

β−

106Rh

0+

107Ru

44

63

106.90991(13)

3.75(5) min

β−

107Rh

(5/2)+

108Ru

44

64

107.91017(12)

4.55(5) min

β−

108Rh

0+

109Ru

44

65

108.91320(7)

34.5(10) s

β−

109Rh

(5/2+)

110Ru

44

66

109.91414(6)

11.6(6) s

β−

110Rh

0+

111Ru

44

67

110.91770(8)

2.12(7) s

β−

111Rh

(5/2+)

112Ru

44

68

111.91897(8)

1.75(7) s

β−

112Rh

0+

113Ru

44

69

112.92249(8)

0.80(5) s

β−

113Rh

(5/2+)

113mRu

130(18) keV

510(30) ms

(11/2−)

114Ru

44

70

113.92428(25)

0.53(6) s

β− (>99.9%)

114Rh

0+

β−, n (<.1%)

113Rh

115Ru

44

71

114.92869(14)

740(80) ms

β− (>99.9%)

115Rh

β−, n (<..1%)

114Rh

116Ru

44

72

115.93081(75)

400 ms [>300 ns]

β−

116Rh

0+

117Ru

44

73

116.93558(75)

300 ms [>300 ns]

β−

117Rh

118Ru

44

74

117.93782(86)

200 ms [>300 ns]

β−

118Rh

0+

119Ru

44

75

118.94284(75)

170 ms [>300 ns]

120Ru

44

76

119.94531(86)

80 ms [>300 ns]

0+

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

89Rh

45

44

88.94884(48)

10 ms
[>1.5 µs]

β+

89Ru

7/2+

90Rh

45

45

89.94287(54)

15(7) ms
[12(+9−4) ms]

β+

90Ru

0+

90mRh

0(500) keV

1.1(3) s
[1.0(+3−2) s]

9+

91Rh

45

46

90.93655(43)

1.74(14) s

β+

91Ru

7/2+

91mRh

1.46(11) s

(1/2−)

92Rh

45

47

91.93198(43)

4.3(13) s

β+

92Ru

(6+)

92mRh

4.66(25) s
[2.9(+15−8) s]

(≥6+)

93Rh

45

48

92.92574(43)

11.9(7) s

β+

93Ru

9/2+

94Rh

45

49

93.92170(48)

70.6(6) s

β+ (98.2%)

94Ru

(2+,4+)

β+, p (1.79%)

93Tc

94mRh

300(200) keV

25.8(2) s

β+

94Ru

(8+)

95Rh

45

50

94.91590(16)

5.02(10) min

β+

95Ru

(9/2)+

95mRh

543.3(3) keV

1.96(4) min

IT (88%)

95Rh

(1/2)−

β+ (12%)

95Ru

96Rh

45

51

95.914461(14)

9.90(10) min

β+

96Ru

(6+)

96mRh

52.0(1) keV

1.51(2) min

IT (60%)

96Rh

(3+)

β+ (40%)

96Ru

97Rh

45

52

96.91134(4)

30.7(6) min

β+

97Ru

9/2+

97mRh

258.85(17) keV

46.2(16) min

β+ (94.4%)

97Ru

1/2−

IT (5.6%)

97Rh

98Rh

45

53

97.910708(13)

8.72(12) min

β+

98Ru

(2)+

98mRh

60(50) keV

3.6(2) min

IT

98Rh

(5+)

β+

98Ru

99Rh

45

54

98.908132(8)

16.1(2) d

β+

99Ru

1/2−

99mRh

64.3(4) keV

4.7(1) h

β+ (99.83%)

99Ru

9/2+

IT (.16%)

99Rh

100Rh

45

55

99.908122(20)

20.8(1) h

β+

100Ru

1−

100m1Rh

107.6(2) keV

4.6(2) min

IT (98.3%)

100Rh

(5+)

β+ (1.7%)

100Ru

100m2Rh

74.78(2) keV

214.0(20) ns

(2)+

100m3Rh

112.0+X keV

130(10) ns

(7+)

101Rh

45

56

100.906164(18)

3.3(3) y

EC

101Ru

1/2−

101mRh

157.32(4) keV

4.34(1) d

EC (93.6%)

101Ru

9/2+

IT (6.4%)

Rh

102Rh

45

57

101.906843(5)

207.0(15) d

β+ (80%)

102Ru

(1−,2−)

β− (20%)

102Pd

102mRh

140.75(8) keV

3.742(10) y

β+ (99.77%)

102Ru

6+

IT (.23%)

102Rh

103Rh

45

58

102.905504(3)

Stable

1/2−

1.0000

103mRh

39.756(6) keV

56.114(9) min

IT

103Rh

7/2+

104Rh

45

59

103.906656(3)

42.3(4) s

β− (99.55%)

104Pd

1+

β+ (.449%)

104Ru

104mRh

128.967(4) keV

4.34(3) min

5+

105Rh

45

60

104.905694(4)

35.36(6) h

β−

105Pd

7/2+

105mRh

129.781(4) keV

42.9(3) s

IT

105Rh

1/2−

β−

105Pd

106Rh

45

61

105.907287(8)

29.80(8) s

β−

106Pd

1+

106mRh

136(12) keV

131(2) min

β−

106Pd

(6)+

107Rh

45

62

106.906748(13)

21.7(4) min

β−

107Pd

7/2+

107mRh

268.36(4) keV

>10 µs

1/2−

108Rh

45

63

107.90873(11)

16.8(5) s

β−

108Pd

1+

108mRh

-60(110) keV

6.0(3) min

β−

108Pd

(5)(+)

109Rh

45

64

108.908737(13)

80(2) s

β−

109Pd

7/2+

110Rh

45

65

109.91114(5)

28.5(15) s

β−

110Pd

(>3)(+)

110mRh

-60(50) keV

3.2(2) s

β−

110Pd

1+

111Rh

45

66

110.91159(3)

11(1) s

β−

111Pd

(7/2+)

112Rh

45

67

111.91439(6)

3.45(37) s

β−

112Pd

1+

112mRh

330(70) keV

6.73(15) s

β−

112Pd

(4,5,6)

113Rh

45

68

112.91553(5)

2.80(12) s

β−

113Pd

(7/2+)

114Rh

45

69

113.91881(12)

1.85(5) s

β− (>99.9%)

114Pd

1+

β−, n (<.1%)

113Pd

114mRh

200(150) keV

1.85(5) s

β−

114Pd

(4,5)

115Rh

45

70

114.92033(9)

0.99(5) s

β−

115Pd

(7/2+)

116Rh

45

71

115.92406(15)

0.68(6) s

β− (>99.9%)

116Pd

1+

β−, n (<.1%)

115Pd

116mRh

200(150) keV

570(50) ms

β−

116Pd

(6−)

117Rh

45

72

116.92598(54)

0.44(4) s

β−

117Pd

(7/2+)

118Rh

45

73

117.93007(54)

310(30) ms

β−

118Pd

(4−10)(+)

119Rh

45

74

118.93211(64)

300 ms
[>300 ns]

β−

119Pd

7/2+

120Rh

45

75

119.93641(64)

200 ms
[>300 ns]

β−

120Pd

121Rh

45

76

120.93872(97)

100 ms
[>300 ns]

β−

121Pd

7/2+

122Rh

45

77

121.94321(75)

50 ms
[>300 ns]

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

91Pd

46

45

90.94911(61)

10 ms [>1.5 µs]

β+

91Rh

7/2+

92Pd

46

46

91.94042(54)

1.1(3) s [0.7(+4−2) s]

β+

92Rh

0+

93Pd

46

47

92.93591(43)

1.07(12) s

β+

93Rh

(9/2+)

93mPd

0+X keV

9.3(+25−17) s

94Pd

46

48

93.92877(43)

9.0(5) s

β+

94Rh

0+

94mPd

4884.4(5) keV

530(10) ns

(14+)

95Pd

46

49

94.92469(43)

10 s

β+

95Rh

9/2+

95mPd

1860(500) keV

13.3(3) s

β+ (94.1%)

95Rh

(21/2+)

IT (5%)

95Pd

β+, p (.9%)

94Ru

96Pd

46

50

95.91816(16)

122(2) s

β+

96Rh

0+

96mPd

2530.8(1) keV

1.81(1) µs

8+

97Pd

46

51

96.91648(32)

3.10(9) min

β+

97Rh

5/2+

98Pd

46

52

97.912721(23)

17.7(3) min

β+

98Rh

0+

99Pd

46

53

98.911768(16)

21.4(2) min

β+

99Rh

(5/2)+

100Pd

46

54

99.908506(12)

3.63(9) d

EC

100Rh

0+

101Pd

46

55

100.908289(19)

8.47(6) h

β+

101Rh

5/2+

102Pd

46

56

101.905609(3)

Observationally Stable

0+

0.0102(1)

103Pd

46

57

102.906087(3)

16.991(19) d

EC

103Rh

5/2+

103mPd

784.79(10) keV

25(2) ns

11/2−

104Pd

46

58

103.904036(4)

Stable

0+

0.1114(8)

105Pd

46

59

104.905085(4)

Stable

5/2+

0.2233(8)

106Pd

46

60

105.903486(4)

Stable

0+

0.2733(3)

107Pd

46

61

106.905133(4)

6.5(3)×106 y

β−

107Ag

5/2+

107m1Pd

115.74(12) keV

0.85(10) µs

1/2+

107m2Pd

214.6(3) keV

21.3(5) s

IT

107Pd

11/2−

108Pd

46

62

107.903892(4)

Stable

0+

0.2646(9)

109Pd

46

63

108.905950(4)

13.7012(24) h

β−

109mAg

5/2+

109m1Pd

113.400(10) keV

380(50) ns

1/2+

109m2Pd

188.990(10) keV

4.696(3) min

IT

109Pd

11/2−

110Pd

46

64

109.905153(12)

Observationally Stable

0+

0.1172(9)

111Pd

46

65

110.907671(12)

23.4(2) min

β−

111mAg

5/2+

111mPd

172.18(8) keV

5.5(1) h

IT

111Pd

11/2−

β−

111mAg

112Pd

46

66

111.907314(19)

21.03(5) h

β−

112Ag

0+

113Pd

46

67

112.91015(4)

93(5) s

β−

113mAg

(5/2+)

113mPd

81.1(3) keV

0.3(1) s

IT

113Pd

(9/2−)

114Pd

46

68

113.910363(25)

2.42(6) min

β−

114Ag

0+

115Pd

46

69

114.91368(7)

25(2) s

β−

115mAg

(5/2+)

115mPd

89.18(25) keV

50(3) s

β− (92%)

115Ag

(11/2−)

IT (8%)

115Pd

116Pd

46

70

115.91416(6)

11.8(4) s

β−

116Ag

0+

117Pd

46

71

116.91784(6)

4.3(3) s

β−

117mAg

(5/2+)

117mPd

203.2(3) keV

19.1(7) ms

IT

117Pd

(11/2−)

118Pd

46

72

117.91898(23)

1.9(1) s

β−

118Ag

0+

119Pd

46

73

118.92311(32)

0.92(13) s

β−

119Ag

120Pd

46

74

119.92469(13)

0.5(1) s

β−

120Ag

0+

121Pd

46

75

120.92887(54)

285 ms

β−

121Ag

122Pd

46

76

121.93055(43)

175 ms [>300 ns]

β−

122Ag

0+

123Pd

46

77

122.93493(64)

108 ms

β−

123Ag

124Pd

46

78

123.93688(54)

38 ms

β−

124Ag

0+

125Pd

46

79

57 ms

β−

125Ag

126Pd

46

80

48.6 ms

β−

126Ag

0+

126m1Pd

2023 keV

330 ns

IT

126Pd

5−

126m2Pd

2110 keV

440 ns

IT

126m1Pd

7−

127Pd

46

81

38 ms

β−

127Ag

128Pd

46

82

35 ms

β−

128Ag

0+

128mPd

2151 keV

5.8 µs

IT

128Pd

8+

129Pd

46

83

31 ms

β−

129Ag

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

93Ag

47

46

92.94978(64)

5 ms
[>1.5 µs]

9/2+

94Ag

47

47

93.94278(54)

37(18) ms
[26(+26−9) ms]

β+

94Pd

0+

94m1Ag

1350(400) keV

422(16) ms

β+ (>99.9%)

94Pd

(7+)

β+, p (<.1%)

93Rh

94m2Ag

6500(2000) keV

300(200) ms

(21+)

95Ag

47

48

94.93548(43)

1.74(13) s

β+ (>99.9%)

95Pd

(9/2+)

β+, p (<.1%)

94Rh

95m1Ag

344.2(3) keV

<0.5 s

(1/2−)

95m2Ag

2531(1) keV

<16 ms

(23/2+)

95m3Ag

4859(1) keV

<40 ms

(37/2+)

96Ag

47

49

95.93068(43)

4.45(4) s

β+ (96.3%)

96Pd

(8+)

β+, p (3.7%)

95Rh

96m1Ag

0(50) keV

6.9(6) s

(2+)

96m2Ag

700(200) ns

97Ag

47

50

96.92397(35)

25.3(3) s

β+

97Pd

(9/2+)

97mAg

2343(49) keV

5 ns

(21/2+)

98Ag

47

51

97.92157(7)

47.5(3) s

β+ (99.99%)

98Pd

(5+)

β+, p (.0012%)

97Rh

98mAg

167.83(15) keV

220(20) ns

(3+)

99Ag

47

52

98.91760(16)

124(3) s

β+

99Pd

(9/2)+

99mAg

506.1(4) keV

10.5(5) s

IT

99Ag

(1/2−)

100Ag

47

53

99.91610(8)

2.01(9) min

β+

100Pd

(5)+

100mAg

15.52(16) keV

2.24(13) min

IT

100Ag

(2)+

β+

100Pd

101Ag

47

54

100.91280(11)

11.1(3) min

β+

101Pd

9/2+

101mAg

274.1(3) keV

3.10(10) s

IT

101Ag

1/2−

102Ag

47

55

101.91169(3)

12.9(3) min

β+

102Pd

5+

102mAg

9.3(4) keV

7.7(5) min

β+ (51%)

102Pd

2+

IT (49%)

102Ag

103Ag

47

56

102.908973(18)

65.7(7) min

β+

103Pd

7/2+

103mAg

134.45(4) keV

5.7(3) s

IT

103Ag

1/2−

104Ag

47

57

103.908629(6)

69.2(10) min

β+

104Pd

5+

104mAg

6.9(4) keV

33.5(20) min

β+ (99.93%)

104Pd

2+

IT (.07%)

104Ag

105Ag

47

58

104.906529(12)

41.29(7) d

β+

105Pd

1/2−

105mAg

25.465(12) keV

7.23(16) min

IT (99.66%)

105Ag

7/2+

β+ (.34%)

105Pd

106Ag

47

59

105.906669(5)

23.96(4) min

β+ (99.5%)

106Pd

1+

β− (0.5%)

106Cd

106mAg

89.66(7) keV

8.28(2) d

β+

106Pd

6+

IT (4.16×10−6%)

106Ag

107Ag

47

60

106.905097(5)

Stable

1/2−

0.51839(8)

107mAg

93.125(19) keV

44.3(2) s

IT

107Ag

7/2+

108Ag

47

61

107.905956(5)

2.37(1) min

β− (97.15%)

108Cd

1+

β+ (2.85%)

108Pd

108mAg

109.440(7) keV

418(21) y

β+ (91.3%)

108Pd

6+

IT (8.96%)

108Ag

109Ag

47

62

108.904752(3)

Stable

1/2−

0.48161(8)

109mAg

88.0341(11) keV

39.6(2) s

IT

109Ag

7/2+

110Ag

47

63

109.906107(3)

24.6(2) s

β− (99.7%)

110Cd

1+

EC (.3%)

110Pd

110m1Ag

1.113 keV

660(40) ns

2−

110m2Ag

117.59(5) keV

249.950(24) d

β− (98.64%)

110Cd

6+

IT (1.36%)

110Ag

111Ag

47

64

110.905291(3)

7.45(1) d

β−

111Cd

1/2−

111mAg

59.82(4) keV

64.8(8) s

IT (99.3%)

111Ag

7/2+

β− (.7%)

111Cd

112Ag

47

65

111.907005(18)

3.130(9) h

β−

112Cd

2(−)

113Ag

47

66

112.906567(18)

5.37(5) h

β−

113mCd

1/2−

113mAg

43.50(10) keV

68.7(16) s

IT (64%)

113Ag

7/2+

β− (36%)

113Cd

114Ag

47

67

113.908804(27)

4.6(1) s

β−

114Cd

1+

114mAg

199(5) keV

1.50(5) ms

IT

114Ag

(<7+)

115Ag

47

68

114.90876(4)

20.0(5) min

β−

115mCd

1/2−

115mAg

41.16(10) keV

18.0(7) s

β− (79%)

115Cd

7/2+

IT (21%)

115Ag

116Ag

47

69

115.91136(5)

2.68(10) min

β−

116Cd

(2)−

116mAg

81.90(20) keV

8.6(3) s

β− (94%)

116Cd

(5+)

IT (6%)

116Ag

117Ag

47

70

116.91168(5)

73.6(14) s
[72.8(+20−7) s]

β−

117mCd

1/2−

117mAg

28.6(2) keV

5.34(5) s

β− (94%)

117mCd

(7/2+)

IT (6%)

117Ag

118Ag

47

71

117.91458(7)

3.76(15) s

β−

118Cd

1-

118m1Ag

45.79(9) keV

~0.1 µs

0(−) to 2(−)

118m2Ag

127.49(5) keV

2.0(2) s

β− (59%)

118Cd

4(+)

IT (41%)

118Ag

118m3Ag

279.37(20) keV

~0.1 µs

(2+,3+)

119Ag

47

72

118.91567(10)

6.0(5) s

β−

119mCd

1/2−

119mAg

20(20) keV

2.1(1) s

β−

119Cd

7/2+

120Ag

47

73

119.91879(8)

1.23(4) s

β− (99.99%)

120Cd

3(+)

β−, n (.003%)

119Cd

120mAg

203.0(10) keV

371(24) ms

β− (63%)

120Cd

6(−)

IT (37%)

120Ag

121Ag

47

74

120.91985(16)

0.79(2) s

β− (99.92%)

121Cd

(7/2+)

β−, n (.076%)

120Cd

122Ag

47

75

121.92353(22)

0.529(13) s

β− (>99.9%)

122Cd

(3+)

β−, n (<.1%)

121Cd

122mAg

80(50) keV

1.5(5) s

β− (>99.9%)

122Cd

8-

β−, n (<.1%)

121Cd

123Ag

47

76

122.92490(22)

0.300(5) s

β− (99.45%)

123Cd

(7/2+)

β−, n (.549%)

122Cd

124Ag

47

77

123.92864(21)

172(5) ms

β− (99.9%)

124Cd

3+

β−, n (.1%)

123Cd

124mAg

0(100) keV

200 ms

β−

124Cd

8-

IT

124Ag

125Ag

47

78

124.93043(32)

166(7) ms

β− (>99.9%)

125Cd

(7/2+)

β−, n (<.1%)

124Cd

126Ag

47

79

125.93450(32)

107(12) ms

β− (>99.9%)

126Cd

3+

β−, n (<.1%)

125Cd

127Ag

47

80

126.93677(32)

79(3) ms

β− (>99.9%)

127Cd

7/2+

β−, n (<.1%)

126Cd

128Ag

47

81

127.94117(32)

58(5) ms

129Ag

47

82

128.94369(43)

44(7) ms
[46(+5−9) ms]

7/2+

129mAg

0(200) keV

~160 ms

1/2−

130Ag

47

83

129.95045(36)

~50 ms

β−

130Cd

0+

131Ag

47

84

35 ms

β−

131Cd

132Ag

47

85

28 ms

β−

132Cd

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

95Cd

48

47

94.94987(64)

5 ms

9/2+

96Cd

48

48

95.93977(54)

1 s

β+

96Ag

0+

97Cd

48

49

96.93494(43)

2.8(6) s

β+ (>99.9%)

97Ag

9/2+

β+, p (<.1%)

96Pd

98Cd

48

50

97.92740(8)

9.2(3) s

β+ (99.975%)

98Ag

0+

β+, p (.025%)

97Ag

98mCd

2427.5(6) keV

190(20) ns

8+

99Cd

48

51

98.92501(22)

16(3) s

β+ (99.78%)

99Ag

(5/2+)

β+, p (.21%)

98Pd

β+, α (10−4%)

94Rh

100Cd

48

52

99.92029(10)

49.1(5) s

β+

100Ag

0+

101Cd

48

53

100.91868(16)

1.36(5) min

β+

101Ag

(5/2+)

102Cd

48

54

101.91446(3)

5.5(5) min

β+

102Ag

0+

103Cd

48

55

102.913419(17)

7.3(1) min

β+

103Ag

5/2+

104Cd

48

56

103.909849(10)

57.7(10) min

β+

104Ag

0+

105Cd

48

57

104.909468(12)

55.5(4) min

β+

105Ag

5/2+

106Cd

48

58

105.906459(6)

Observationally Stable

0+

0.0125(6)

107Cd

48

59

106.906618(6)

6.50(2) h

β+

107mAg

5/2+

108Cd

48

60

107.904184(6)

Observationally Stable

0+

0.0089(3)

109Cd

48

61

108.904982(4)

461.4(12) d

EC

109Ag

5/2+

109m1Cd

59.6(4) keV

12(2) µs

1/2+

109m2Cd

463.0(5) keV

10.9(5) µs

11/2

110Cd

48

62

109.9030021(29)

Stable

0+

0.1249(18)

111Cd

48

63

110.9041781(29)

Stable

1/2+

0.1280(12)

111mCd

396.214(21) keV

48.50(9) min

IT

111Cd

11/2−

112Cd

48

64

111.9027578(29)

Stable

0+

0.2413(21)

113Cd

48

65

112.9044017(29)

8.04(5)×1015 y

β−

113In

1/2+

0.1222(12)

113mCd

263.54(3) keV

14.1(5) y

β− (99.86%)

113In

11/2−

IT (.139%)

113Cd

114Cd

48

66

113.9033585(29)

Observationally Stable

0+

0.2873(42)

115Cd

48

67

114.9054310(29)

53.46(5) h

β−

115mIn

1/2+

115mCd

181.0(5) keV

44.56(24) d

β−

115mIn

(11/2)−

116Cd

48

68

115.904756(3)

2.8(2)×1019 y

β−β−

116Sn

0+

0.0749(18)

117Cd

48

69

116.907219(4)

2.49(4) h

β−

117mIn

1/2+

117mCd

136.4(2) keV

3.36(5) h

β−

117mIn

(11/2)−

118Cd

48

70

117.906915(22)

50.3(2) min

β−

118In

0+

119Cd

48

71

118.90992(9)

2.69(2) min

β−

119mIn

(3/2+)

119mCd

146.54(11) keV

2.20(2) min

β−

119mIn

(11/2−)

120Cd

48

72

119.90985(2)

50.80(21) s

β−

120In

0+

121Cd

48

73

120.91298(9)

13.5(3) s

β−

121mIn

(3/2+)

121mCd

214.86(15) keV

8.3(8) s

β−

121mIn

(11/2−)

122Cd

48

74

121.91333(5)

5.24(3) s

β−

122In

0+

123Cd

48

75

122.91700(4)

2.10(2) s

β−

123mIn

(3/2)+

123mCd

316.52(23) keV

1.82(3) s

β−

123In

(11/2−)

IT

23Cd

124Cd

48

76

123.91765(7)

1.25(2) s

β−

124In

0+

125Cd

48

77

124.92125(7)

0.65(2) s

β−

125mIn

(3/2+)

125mCd

50(70) keV

570(90) ms

β−

125In

11/2−

126Cd

48

78

125.92235(6)

0.515(17) s

β−

126In

0+

127Cd

48

79

126.92644(8)

0.37(7) s

β−

127mIn

(3/2+)

128Cd

48

80

127.92776(32)

0.28(4) s

β−

128In

0+

129Cd

48

81

128.93215(32)

242(8) ms

β− (>99.9%)

129In

3/2+

IT (<.1%)

129Cd

129mCd

0(200) keV

104(6) ms

11/2−

130Cd

48

82

129.9339(3)

162(7) ms

β− (96%)

130In

0+

β−, n (4%)

129In

131Cd

48

83

130.94067(32)

68(3) ms

7/2−

132Cd

48

84

131.94555(54)

97(10) ms

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

97In

49

48

96.94954(64)

5 ms

9/2+

98In

49

49

97.94214(21)

45(23) ms
[32(+32−11) ms]

β+

98Cd

0+

98mIn

0(500) keV

1.7(8) s
[1.2(+12−4) s]

99In

49

50

98.93422(43)

3.1(8) s
[3.0(+8-7) s]

β+

99Cd

9/2+

99mIn

400(150) keV

1 s

1/2−

100In

49

51

99.93111(27)

5.9(2) s

β+ (96.1%)

100Cd

(6,7)+

β+, p (3.9%)

99Ag

101In

49

52

100.92634(32)

15.1(3) s

β+

100Cd

9/2+

β+, p

100Ag

101mIn

550(100) keV

10 s

1/2−

102In

49

53

101.92409(12)

23.3(1) s

β+ (99.99%)

102Cd

(6+)

β+, p (.00929%)

101Ag

103In

49

54

102.919914(27)

60(1) s

β+

103Cd

9/2+

103mIn

631.7(1) keV

34(2) s

(1/2−)

104In

49

55

103.91830(9)

1.80(3) min

β+

104Cd

5,6(+)

104mIn

93.48(10) keV

15.7(5) s

IT (80%)

104In

(3+)

β+ (20%)

104Cd

105In

49

56

104.914674(19)

5.07(7) min

β+

105Cd

9/2+

105mIn

674.1(3) keV

48(6) s

IT

105In

(1/2)−

106In

49

57

105.913465(13)

6.2(1) min

β+

106Cd

7+

106mIn

28.6(3) keV

5.2(1) min

β+

106Cd

(3+)

107In

49

58

106.910295(12)

32.4(3) min

β+

107Cd

9/2+

107mIn

678.5(3) keV

50.4(6) s

IT

107In

1/2−

108In

49

59

107.909698(10)

58.0(12) min

β+

108Cd

7+

108mIn

29.75(5) keV

39.6(7) min

β+

108Cd

2+

109In

49

60

108.907151(6)

4.2(1) h

β+

109Cd

9/2+

109m1In

650.1(3) keV

1.34(7) min

IT

109In

1/2−

109m2In

2101.8(2) keV

209(6) ms

(19/2+)

110In

49

61

109.907165(13)

4.9(1) h

β+

110Cd

7+

110mIn

62.1(5) keV

69.1(5) min

β+

110Cd

2+

111In

49

62

110.905103(5)

2.8047(5) d

EC

111Cd

9/2+

111mIn

536.95(6) keV

7.7(2) min

IT

111In

1/2−

112In

49

63

111.905532(6)

14.97(10) min

β+ (56%)

112Cd

1+

β− (44%)

112Sn

112m1In

156.59(5) keV

20.56(6) min

β+

112Cd

4+

112m2In

350.76(9) keV

690(50) ns

7+

112m3In

613.69(14) keV

2.81(3) µs

8-

113In

49

64

112.904058(3)

Stable

9/2+

0.0429(5)

113mIn

391.699(3) keV

1.6579(4) h

IT

113In

1/2−

114In

49

65

113.904914(3)

71.9(1) s

β+ (99.5%)

114Cd

1+

β− (0.5%)

114Sn

114m1In

190.29(3) keV

49.51(1) d

IT (96.75%)

114In

5+

β+ (3.25%)

114Cd

114m2In

501.94(3) keV

43.1(6) ms

IT (96.75%)

114In

(8−)

β+ (3.25%)

114Cd

114m3In

641.72(3) keV

4.3(4) µs

(7+)

115In

49

66

114.903878(5)

4.41(25)×1014 a

β−

115Sn

9/2+

0.9571(5)

115mIn

336.244(17) keV

4.486(4) h

IT (95%)

115In

1/2−

β− (5%)

115Sn

116In

49

67

115.905260(5)

14.10(3) s

β−

116Sn

1+

EC

116Cd

116m1In

127.267(6) keV

54.29(17) min

5+

116m2In

289.660(6) keV

2.18(4) s

8-

117In

49

68

116.904514(6)

43.2(3) min

β−

117Sn

9/2+

117mIn

315.302(12) keV

116.2(3) min

β− (52.91%)

117Sn

1/2−

IT (47.09%)

117In

118In

49

69

117.906354(9)

5.0(5) s

β−

118Sn

1+

118m1In

100(50) keV

4.364(7) min

β−

118Sn

5+

118m2In

240(50) keV

8.5(3) s

8-

119In

49

70

118.905845(8)

2.4(1) min

β−

119Sn

9/2+

119m1In

311.37(3) keV

18.0(3) min

β− (94.4%)

119Sn

1/2−

IT (5.6%)

119In

119m2In

654.27(7) keV

130(15) ns

1/2+,3/2+

120In

49

71

119.90796(4)

3.08(8) s

β−

120Sn

1+

120m1In

50(60) keV

46.2(8) s

5+

120m2In

300(200) keV

47.3(5) s

β−

120Sn

8(−)

121In

49

72

120.907846(29)

23.1(6) s

β−

121Sn

9/2+

121mIn

312.98(8) keV

3.88(10) min

β− (98.8%)

121Sn

1/2−

IT (1.2%)

121In

122In

49

73

121.91028(5)

1.5(3) s

β−

122Sn

1+

122m1In

40(60) keV

10.3(6) s

5+

122m2In

290(140) keV

10.8(4) s

β−

122Sn

8-

123In

49

74

122.910438(26)

6.17(5) s

β−

123mSn

(9/2)+

123mIn

327.21(4) keV

47.4(4) s

β−

123mSn

(1/2)−

124In

49

75

123.91318(5)

3.11(10) s

β−

124Sn

3+

124mIn

-20(70) keV

3.7(2) s

β−

124Sn

(8)(−)

IT

124In

125In

49

76

124.91360(3)

2.36(4) s

β−

125mSn

9/2+

125mIn

360.12(9) keV

12.2(2) s

β−

125Sn

1/2(−)

126In

49

77

125.91646(4)

1.53(1) s

β−

126Sn

3(+)

126mIn

100(60) keV

1.64(5) s

β−

126Sn

8(−)

127In

49

78

126.91735(4)

1.09(1) s

β− (99.97%)

127mSn

9/2(+)

β−, n (.03%)

126Sn

127mIn

460(70) keV

3.67(4) s

β− (99.31%)

127mSn

(1/2−)

β−, n (.69%)

126Sn

128In

49

79

127.92017(5)

0.84(6) s

β− (99.96%)

128Sn

(3)+

β−, n (.038%)

127Sn

128m1In

247.87(10) keV

10(7) ms

(1)−

128m2In

320(60) keV

720(100) ms

β−

128Sn

(8−)

129In

49

80

128.92170(5)

611(4) ms

β− (99.75%)

129Sn

9/2+

β−, n (.25%)

128Sn

129m1In

380(70) keV

1.23(3) s

β− (97.2%)

129Sn

(1/2−)

β−, n (2.5%)

128Sn

IT (.3%)

129In

129m2In

1688.0(5) keV

8.5(5) µs

17/2−

130In

49

81

129.92497(4)

0.29(2) s

β− (98.35%)

130Sn

1(−)

β−, n (1.65%)

129Sn

130m1In

50(50) keV

538(5) ms

10-

130m2In

400(60) keV

0.54(1) s

(5+)

131In

49

82

130.92685(3)

0.28(3) s

β− (97.8%)

131Sn

(9/2+)

β−, n (2.19%)

130Sn

131m1In

363(37) keV

0.35(5) s

(1/2−)

131m2In

4.10(7) MeV

320(60) ms

(19/2+ to 23/2+)

132In

49

83

131.93299(7)

206(4) ms

β− (94.8%)

132Sn

(7−)

β−, n (5.2%)

131Sn

133In

49

84

132.93781(32)

165(3) ms

β−, n (85%)

132Sn

(9/2+)

β− (15%)

133Sn

133mIn

330(40) keV

180 ms

IT

133In

(1/2−)

134In

49

85

133.94415(43)

140(4) ms

β− (79%)

134Sn

β−, n (17%)

133Sn

β−, 2n (4%)

132Sn

135In

49

86

134.94933(54)

92(10) ms

β−

135Sn

9/2+

136In

49

87

85 ms

β−

136Sn

137In

49

88

65 ms

β−

137Sn

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

99Sn

50

49

98.94933(64)

5 ms

9/2+

100Sn

50

50

99.93904(76)

1.1(4) s
[0.94(+54−27) s]

β+ (83%)

100In

0+

β+, p (17%)

99Cd

101Sn

50

51

100.93606(32)

3(1) s

β+

101In

5/2+

β+, p (rare)

100Cd

102Sn

50

52

101.93030(14)

4.5(7) s

β+

102In

0+

β+, p (rare)

101Cd

102mSn

2017(2) keV

720(220) ns

(6+)

103Sn

50

53

102.92810(32)

7.0(6) s

β+

103In

5/2+

β+, p (rare)

102Cd

104Sn

50

54

103.92314(11)

20.8(5) s

β+

104In

0+

105Sn

50

55

104.92135(9)

34(1) s

β+

105In

(5/2+)

β+, p (rare)

104Cd

106Sn

50

56

105.91688(5)

115(5) s

β+

106In

0+

107Sn

50

57

106.91564(9)

2.90(5) min

β+

107In

(5/2+)

108Sn

50

58

107.911925(21)

10.30(8) min

β+

108In

0+

109Sn

50

59

108.911283(11)

18.0(2) min

β+

109In

5/2(+)

110Sn

50

60

109.907843(15)

4.11(10) h

EC

110In

0+

111Sn

50

61

110.907734(7)

35.3(6) min

β+

111In

7/2+

111mSn

254.72(8) keV

12.5(10) µs

1/2+

112Sn

50

62

111.904818(5)

Observationally Stable

0+

0.0097(1)

113Sn

50

63

112.905171(4)

115.09(3) d

β+

113In

1/2+

113mSn

77.386(19) keV

21.4(4) min

IT (91.1%)

113Sn

7/2+

β+ (8.9%)

113In

114Sn

50

64

113.902779(3)

Stable

0+

0.0066(1)

114mSn

3087.37(7) keV

733(14) ns

7−

115Sn

50

65

114.903342(3)

Stable

1/2+

0.0034(1)

115m1Sn

612.81(4) keV

3.26(8) µs

7/2+

115m2Sn

713.64(12) keV

159(1) µs

11/2−

116Sn

50

66

115.901741(3)

Stable

0+

0.1454(9)

117Sn

50

67

116.902952(3)

Stable

1/2+

0.0768(7)

117m1Sn

314.58(4) keV

13.76(4) d

IT

117Sn

11/2−

117m2Sn

2406.4(4) keV

1.75(7) µs

(19/2+)

118Sn

50

68

117.901603(3)

Stable

0+

0.2422(9)

119Sn

50

69

118.903308(3)

Stable

1/2+

0.0859(4)

119m1Sn

89.531(13) keV

293.1(7) d

IT

119Sn

11/2−

119m2Sn

2127.0(10) keV

9.6(12) µs

(19/2+)

120Sn

50

70

119.9021947(27)

Stable

0+

0.3258(9)

120m1Sn

2481.63(6) keV

11.8(5) µs

(7−)

120m2Sn

2902.22(22) keV

6.26(11) µs

(10+)

121Sn

50

71

120.9042355(27)

27.03(4) h

β−

121Sb

3/2+

121m1Sn

6.30(6) keV

43.9(5) y

IT (77.6%)

121Sn

11/2−

β− (22.4%)

121Sb

121m2Sn

1998.8(9) keV

5.3(5) µs

(19/2+)

121m3Sn

2834.6(18) keV

0.167(25) µs

(27/2−)

122Sn

50

72

121.9034390(29)

Observationally Stable

0+

0.0463(3)

123Sn

50

73

122.9057208(29)

129.2(4) d

β−

123Sb

11/2−

123m1Sn

24.6(4) keV

40.06(1) min

β−

123Sb

3/2+

123m2Sn

1945.0(10) keV

7.4(26) µs

(19/2+)

123m3Sn

2153.0(12) keV

6 µs

(23/2+)

123m4Sn

2713.0(14) keV

34 µs

(27/2−)

124Sn

50

74

123.9052739(15)

Observationally Stable

0+

0.0579(5)

124m1Sn

2204.622(23) keV

0.27(6) µs

5-

124m2Sn

2325.01(4) keV

3.1(5) µs

7−

124m3Sn

2656.6(5) keV

45(5) µs

(10+)

125Sn

50

75

124.9077841(16)

9.64(3) d

β−

125Sb

11/2−

125mSn

27.50(14) keV

9.52(5) min

3/2+

126Sn

50

76

125.907653(11)

2.30(14)×105 y

β− (66.5%)

126m2Sb

0+

β− (33.5%)

126m1Sb

126m1Sn

2218.99(8) keV

6.6(14) µs

7−

126m2Sn

2564.5(5) keV

7.7(5) µs

(10+)

127Sn

50

77

126.910360(26)

2.10(4) h

β−

127Sb

(11/2−)

127mSn

4.7(3) keV

4.13(3) min

β−

127Sb

(3/2+)

128Sn

50

78

127.910537(29)

59.07(14) min

β−

128Sb

0+

128mSn

2091.50(11) keV

6.5(5) s

IT

128Sn

(7−)

129Sn

50

79

128.91348(3)

2.23(4) min

β−

129Sb

(3/2+)

129mSn

35.2(3) keV

6.9(1) min

β− (99.99%)

129Sb

(11/2−)

IT (.002%)

129Sn

130Sn

50

80

129.913967(11)

3.72(7) min

β−

130Sb

0+

130m1Sn

1946.88(10) keV

1.7(1) min

β−

130Sb

(7−)

130m2Sn

2434.79(12) keV

1.61(15) µs

(10+)

131Sn

50

81

130.917000(23)

56.0(5) s

β−

131Sb

(3/2+)

131m1Sn

80(30) keV

58.4(5) s

β− (99.99%)

131Sb

(11/2−)

IT (.0004%)

131Sn

131m2Sn

4846.7(9) keV

300(20) ns

(19/2− to 23/2−)

132Sn

50

82

131.917816(15)

39.7(8) s

β−

132Sb

0+

133Sn

50

83

132.92383(4)

1.45(3) s

β− (99.97%)

133Sb

(7/2−)

β−, n (.0294%)

132Sb

134Sn

50

84

133.92829(11)

1.050(11) s

β− (83%)

134Sb

0+

β−, n (17%)

133Sb

135Sn

50

85

134.93473(43)

530(20) ms

β−

135Sb

(7/2−)

β−, n

134Sb

136Sn

50

86

135.93934(54)

0.25(3) s

β−

136Sb

0+

β−, n

135Sb

137Sn

50

87

136.94599(64)

190(60) ms

β−

137Sb

5/2−

138Sn

50

88

137.951840(540)

140 ms +30-20

β−

138Sb

138mSn

1344(2) keV

210(45) ns

139Sn

50

89

137.951840(540)

130 ms

β−

139Sb

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

103Sb

51

52

102.93969(32)

100 ms [>1.5 µs]

β+

103Sn

5/2+

104Sb

51

53

103.93647(39)

0.47(13) s
[0.44(+15−11) s]

β+ (86%)

104Sn

p (7%)

103Sn

β+, p (7%)

103In

α (<1%)

100In

105Sb

51

54

104.93149(11)

1.12(16) s

β+ (99%)

105Sn

(5/2+)

p (1%)

104Sn

β+, p (<1%)

104In

106Sb

51

55

105.92879(34)

0.6(2) s

β+

106Sn

(4+)

106mSb

1000(500) keV

220(20) ns

107Sb

51

56

106.92415(32)

4.0(2) s

β+

107Sn

5/2+

108Sb

51

57

107.92216(22)

7.4(3) s

β+

108Sn

(4+)

β+, p (rare)

107In

109Sb

51

58

108.918132(20)

17.3(5) s

β+

109Sn

5/2+

110Sb

51

59

109.91675(22)

23.0(4) s

β+

110Sn

(4+)

111Sb

51

60

110.91316(3)

75(1) s

β+

111Sn

(5/2+)

112Sb

51

61

111.912398(19)

51.4(10) s

β+

112Sn

3+

113Sb

51

62

112.909372(19)

6.67(7) min

β+

113Sn

5/2+

114Sb

51

63

113.90927(3)

3.49(3) min

β+

114Sn

(3+)

114mSb

495.5(7) keV

219(12) µs

(8−)

115Sb

51

64

114.906598(17)

32.1(3) min

β+

115Sn

5/2+

116Sb

51

65

115.906794(6)

15.8(8) min

β+

116Sn

3+

116m1Sb

93.99(5) keV

194(4) ns

1+

116m2Sb

380(40) keV

60.3(6) min

β+

116Sn

8−

117Sb

51

66

116.904836(10)

2.80(1) h

β+

117Sn

5/2+

118Sb

51

67

117.905529(4)

3.6(1) min

β+

118Sn

1+

118m1Sb

50.814(21) keV

20.6(6) µs

(3)+

118m2Sb

250(6) keV

5.00(2) h

β+

118Sn

8−

119Sb

51

68

118.903942(9)

38.19(22) h

EC

119Sn

5/2+

119m1Sb

2553.6(3) keV

130(3) ns

(19/2−)

119m2Sb

2852(7) keV

850(90) ms

IT

119Sb

27/2+

120Sb

51

69

119.905072(8)

15.89(4) min

β+

120Sn

1+

120m1Sb

0(100) keV

5.76(2) d

β+

120Sn

8−

120m2Sb

78.16(5) keV

246(2) ns

(3+)

120m3Sb

2328.3(6) keV

400(8) ns

(6)

121Sb

51

70

120.9038157(24)

Stable

5/2+

0.5721(5)

122Sb

51

71

121.9051737(24)

2.7238(2) d

β− (97.59%)

122Te

2−

β+ (2.41%)

122Sn

122m1Sb

61.4131(5) keV

1.86(8) µs

3+

122m2Sb

137.4726(8) keV

0.53(3) ms

(5)+

122m3Sb

163.5591(17) keV

4.191(3) min

IT

122Sb

(8)−

123Sb

51

72

122.9042140(22)

Stable

7/2+

0.4279(5)

124Sb

51

73

123.9059357(22)

60.20(3) d

β−

124Te

3−

124m1Sb

10.8627(8) keV

93(5) s

IT (75%)

124Sb

5+

β− (25%)

124Te

124m2Sb

36.8440(14) keV

20.2(2) min

(8)−

124m3Sb

40.8038(7) keV

3.2(3) µs

(3+,4+)

125Sb

51

74

124.9052538(28)

2.75856(25) y

β−

125mTe

7/2+

126Sb

51

75

125.90725(3)

12.35(6) d

β−

126Te

(8−)

126m1Sb

17.7(3) keV

19.15(8) min

β− (86%)

126Te

(5+)

IT (14%)

126Sb

126m2Sb

40.4(3) keV

~11 s

IT

126m1Sb

(3−)

126m3Sb

104.6(3) keV

553(5) ns

(3+)

127Sb

51

76

126.906924(6)

3.85(5) d

β−

127mTe

7/2+

128Sb

51

77

127.909169(27)

9.01(4) h

β−

128Te

8−

128mSb

10(7) keV

10.4(2) min

β− (96.4%)

128Te

5+

IT (3.6%)

128Sb

129Sb

51

78

128.909148(23)

4.40(1) h

β−

129mTe

7/2+

129m1Sb

1851.05(10) keV

17.7(1) min

β− (85%)

129Te

(19/2−)

IT (15%)

129Sb

129m2Sb

1860.90(10) keV

>2 µs

(15/2−)

129m3Sb

2138.9(5) keV

1.1(1) µs

(23/2+)

130Sb

51

79

129.911656(18)

39.5(8) min

β−

130Te

(8−)

130mSb

4.80(20) keV

6.3(2) min

β−

130Te

(4,5)+

131Sb

51

80

130.911982(22)

23.03(4) min

β−

131mTe

(7/2+)

132Sb

51

81

131.914467(15)

2.79(5) min

β−

132Te

(4+)

132m1Sb

200(30) keV

4.15(5) min

β−

132Te

(8−)

132m2Sb

254.5(3) keV

102(4) ns

(6−)

133Sb

51

82

132.915252(27)

2.5(1) min

β−

133mTe

(7/2+)

134Sb

51

83

133.92038(5)

0.78(6) s

β−

134Te

(0-)

134mSb

80(110) keV

10.07(5) s

β− (99.9%)

134Te

(7−)

β−, n (.091%)

133Te

135Sb

51

84

134.92517(11)

1.68(2) s

β− (82.4%)

135Te

(7/2+)

β−, n (17.6%)

134Te

136Sb

51

85

135.93035(32)

0.923(14) s

β− (83%)

136Te

1−

β−, n (17%)

135Te

136mSb

173(3) keV

570(50) ns

6−

137Sb

51

86

136.93531(43)

450(50) ms

β−

137Te

7/2+

β−, n

136Te

138Sb

51

87

137.94079(32)

500 ms [>300 ns]

β−

138Te

2−

β−, n

137Te

139Sb

51

88

138.94598(54)

300 ms [>300 ns]

β−

139Te

7/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

105Te

52

53

104.94364(54)

1 µs

5/2+

106Te

52

54

105.93750(14)

70(20) µs
[70(+20−10) µs]

α

102Sn

0+

107Te

52

55

106.93501(32)

3.1(1) ms

α (70%)

103Sn

5/2+

β+ (30%)

107Sb

108Te

52

56

107.92944(11)

2.1(1) s

α (49%)

104Sn

0+

β+ (48.5%)

108Sb

β+, p (2.4%)

107Sn

β+, α (.065%)

104In

109Te

52

57

108.92742(7)

4.6(3) s

β+ (86.99%)

109Sb

(5/2+)

β+, p (9.4%)

108Sn

α (7.9%)

105Sn

β+, α (.005%)

105In

110Te

52

58

109.92241(6)

18.6(8) s

β+ (99.99%)

110Sb

0+

β+, p (.003%)

109Sn

111Te

52

59

110.92111(8)

19.3(4) s

β+

111Sb

(5/2)+

β+, p (rare)

110Sn

112Te

52

60

111.91701(18)

2.0(2) min

β+

112Sb

0+

113Te

52

61

112.91589(3)

1.7(2) min

β+

113Sb

(7/2+)

114Te

52

62

113.91209(3)

15.2(7) min

β+

114Sb

0+

115Te

52

63

114.91190(3)

5.8(2) min

β+

115Sb

7/2+

115m1Te

10(7) keV

6.7(4) min

β+

115Sb

(1/2)+

IT

115Te

115m2Te

280.05(20) keV

7.5(2) µs

11/2−

116Te

52

64

115.90846(3)

2.49(4) h

β+

116Sb

0+

117Te

52

65

116.908645(14)

62(2) min

β+

117Sb

1/2+

117mTe

296.1(5) keV

103(3) ms

IT

117Te

(11/2−)

118Te

52

66

117.905828(16)

6.00(2) d

EC

118Sb

0+

119Te

52

67

118.906404(9)

16.05(5) h

β+

119Sb

1/2+

119mTe

260.96(5) keV

4.70(4) d

β+ (99.99%)

119Sb

11/2−

IT (.008%)

119Te

120Te

52

68

119.90402(1)

Observationally Stable

0+

9(1)×10−4

121Te

52

69

120.904936(28)

19.16(5) d

β+

121Sb

1/2+

121mTe

293.991(22) keV

154(7) d

IT (88.6%)

121Te

11/2−

β+ (11.4%)

121Sb

122Te

52

70

121.9030439(16)

Stable

0+

0.0255(12)

123Te

52

71

122.9042700(16)

Observationally Stable

1/2+

0.0089(3)

123mTe

247.47(4) keV

119.2(1) d

IT

123Te

11/2−

124Te

52

72

123.9028179(16)

Stable

0+

0.0474(14)

125Te

52

73

124.9044307(16)

Stable

1/2+

0.0707(15)

125mTe

144.772(9) keV

57.40(15) d

IT

125Te

11/2−

126Te

52

74

125.9033117(16)

Stable

0+

0.1884(25)

127Te

52

75

126.9052263(16)

9.35(7) h

β−

127I

3/2+

127mTe

88.26(8) keV

109(2) d

IT (97.6%)

127Te

11/2−

β− (2.4%)

127I

128Te

52

76

127.9044631(19)

2.2(3)×1024 y

β−β−

128Xe

0+

0.3174(8)

128mTe

2790.7(4) keV

370(30) ns

10+

129Te

52

77

128.9065982(19)

69.6(3) min

β−

129I

3/2+

129mTe

105.50(5) keV

33.6(1) d

11/2-

130Te

52

78

129.9062244(21)

8.2(0.2 (stat.), 0.6 (syst.))×1020 y

β−β−

130Xe

0+

0.3408(62)

130m1Te

2146.41(4) keV

115(8) ns

(7)−

130m2Te

2661(7) keV

1.90(8) µs

(10+)

130m3Te

4375.4(18) keV

261(33) ns

131Te

52

79

130.9085239(21)

25.0(1) min

β−

131I

3/2+

131mTe

182.250(20) keV

30(2) h

β− (77.8%)

131I

11/2−

IT (22.2%)

131Te

132Te

52

80

131.908553(7)

3.204(13) d

β−

132I

0+

133Te

52

81

132.910955(26)

12.5(3) min

β−

133I

(3/2+)

133mTe

334.26(4) keV

55.4(4) min

β− (82.5%)

133I

(11/2−)

IT (17.5%)

133Te

134Te

52

82

133.911369(11)

41.8(8) min

β−

134I

0+

134mTe

1691.34(16) keV

164.1(9) ns

6+

135Te

52

83

134.91645(10)

19.0(2) s

β−

135I

(7/2-)

135mTe

1554.88(17) keV

510(20) ns

(19/2−)

136Te

52

84

135.92010(5)

17.63(8) s

β− (98.7%)

136I

0+

β−, n (1.3%)

135I

137Te

52

85

136.92532(13)

2.49(5) s

β− (97.01%)

137I

3/2−

β−, n (2.99%)

136I

138Te

52

86

137.92922(22)

1.4(4) s

β− (93.7%)

138I

0+

β−, n (6.3%)

137I

139Te

52

87

138.93473(43)

500 ms
[>300 ns]

β−

139I

5/2−

β−, n

138I

140Te

52

88

139.93885(32)

300 ms
[>300 ns]

β−

140I

0+

β−, n

139I

141Te

52

89

140.94465(43)

100 ms
[>300 ns]

β−

141I

5/2−

β−, n

140I

142Te

52

90

141.94908(64)

50 ms
[>300 ns]

β−

142I

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

108I

53

55

107.94348(39)

36(6) ms

α (90%)

104Sb

(1)

β+ (9%)

108Te

p (1%)

107Te

109I

53

56

108.93815(11)

103(5) µs

p (99.5%)

108Te

(5/2+)

α (.5%)

105Sb

110I

53

57

109.93524(33)

650(20) ms

β+ (70.9%)

110Te

1+

α (17%)

106Sb

β+, p (11%)

109Sb

β+, α (1.09%)

106Sn

111I

53

58

110.93028(32)

2.5(2) s

β+ (99.92%)

111Te

(5/2+)

α (.088%)

107Sb

112I

53

59

111.92797(23)

3.42(11) s

β+ (99.01%)

112Te

β+, p (.88%)

111Sb

β+, α (.104%)

108Sn

α (.0012%)

108Sb

113I

53

60

112.92364(6)

6.6(2) s

β+ (100%)

113Te

5/2+

α (3.3×10−7%)

109Sb

β+, α

109Sn

114I

53

61

113.92185(32)

2.1(2) s

β+

114Te

1+

β+, p (rare)

113Sb

114mI

265.9(5) keV

6.2(5) s

β+ (91%)

114Te

(7)

IT (9%)

114I

115I

53

62

114.91805(3)

1.3(2) min

β+

115Te

(5/2+)

116I

53

63

115.91681(10)

2.91(15) s

β+

116Te

1+

116mI

400(50) keV

3.27(16) µs

(7−)

117I

53

64

116.91365(3)

2.22(4) min

β+

117Te

(5/2)+

118I

53

65

117.913074(21)

13.7(5) min

β+

118Te

2−

118mI

190.1(10) keV

8.5(5) min

β+

118Te

(7−)

IT (rare)

118I

119I

53

66

118.91007(3)

19.1(4) min

β+

119Te

5/2+

120I

53

67

119.910048(19)

81.6(2) min

β+

120Te

2−

120m1I

72.61(9) keV

228(15) ns

(1+,2+,3+)

120m2I

320(15) keV

53(4) min

β+

120Te

(7−)

121I

53

68

120.907367(11)

2.12(1) h

β+

121Te

5/2+

121mI

2376.9(4) keV

9.0(15) µs

122I

53

69

121.907589(6)

3.63(6) min

β+

122Te

1+

123I

53

70

122.905589(4)

13.2235(19) h

EC

123Te

5/2+

124I

53

71

123.9062099(25)

4.1760(3) d

β+

124Te

2−

125I

53

72

124.9046302(16)

59.400(10) d

EC

125Te

5/2+

126I

53

73

125.905624(4)

12.93(5) d

β+ (56.3%)

126Te

2−

β− (43.7%)

126Xe

127I

53

74

126.904473(4)

Stable

5/2+

1.0000

128I

53

75

127.905809(4)

24.99(2) min

β− (93.1%)

128Xe

1+

β+ (6.9%)

128Te

128m1I

137.850(4) keV

845(20) ns

4−

128m2I

167.367(5) keV

175(15) ns

(6)−

129I

53

76

128.904988(3)

1.57(4)×107 y

β−

129Xe

7/2+

Trace

130I

53

77

129.906674(3)

12.36(1) h

β−

130Xe

5+

130m1I

39.9525(13) keV

8.84(6) min

IT (84%)

130I

2+

β− (16%)

130Xe

130m2I

69.5865(7) keV

133(7) ns

(6)−

130m3I

82.3960(19) keV

315(15) ns

-

130m4I

85.1099(10) keV

254(4) ns

(6)−

131I

53

78

130.9061246(12)

8.02070(11) d

β−

131Xe

7/2+

132I

53

79

131.907997(6)

2.295(13) h

β−

132Xe

4+

132mI

104(12) keV

1.387(15) h

IT (86%)

132I

(8−)

β− (14%)

132Xe

133I

53

80

132.907797(5)

20.8(1) h

β−

133Xe

7/2+

133m1I

1634.174(17) keV

9(2) s

IT

133I

(19/2−)

133m2I

1729.160(17) keV

~170 ns

(15/2−)

134I

53

81

133.909744(9)

52.5(2) min

β−

134Xe

(4)+

134mI

316.49(22) keV

3.52(4) min

IT (97.7%)

134I

(8)−

β− (2.3%)

134Xe

135I

53

82

134.910048(8)

6.57(2) h

β−

135Xe

7/2+

136I

53

83

135.91465(5)

83.4(10) s

β−

136Xe

(1−)

136mI

650(120) keV

46.9(10) s

β−

136Xe

(6−)

137I

53

84

136.917871(30)

24.13(12) s

β− (92.86%)

137Xe

(7/2+)

β−, n (7.14%)

136Xe

138I

53

85

137.92235(9)

6.23(3) s

β− (94.54%)

138Xe

(2−)

β−, n (5.46%)

137Xe

139I

53

86

138.92610(3)

2.282(10) s

β− (90%)

139Xe

7/2+

β−, n (10%)

138Xe

140I

53

87

139.93100(21)

860(40) ms

β− (90.7%)

140Xe

(3)(−)

β−, n (9.3%)

139Xe

141I

53

88

140.93503(21)

430(20) ms

β− (78%)

141Xe

7/2+

β−, n (22%)

140Xe

142I

53

89

141.94018(43)

~200 ms

β− (75%)

142Xe

2−

β−, n (25%)

141Xe

143I

53

90

142.94456(43)

100 ms [> 300 ns]

β−

143Xe

7/2+

144I

53

91

143.94999(54)

50 ms [> 300 ns]

β−

144Xe

1−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

110Xe

54

56

109.94428(14)

310(190) ms
[105(+35−25) ms]

β+

110I

0+

α

106Te

111Xe

54

57

110.94160(33)

740(200) ms

β+ (90%)

111I

5/2+

α (10%)

107Te

112Xe

54

58

111.93562(11)

2.7(8) s

β+ (99.1%)

112I

0+

α (.9%)

108Te

113Xe

54

59

112.93334(9)

2.74(8) s

β+ (92.98%)

113I

(5/2+)

β+, p (7%)

112Te

α (.011%)

109Te

β+, α (.007%)

109Sb

114Xe

54

60

113.927980(12)

10.0(4) s

β+

114I

0+

115Xe

54

61

114.926294(13)

18(4) s

β+ (99.65%)

115I

(5/2+)

β+, p (.34%)

114Te

β+, α (3×10−4%)

111Sb

116Xe

54

62

115.921581(14)

59(2) s

β+

116I

0+

117Xe

54

63

116.920359(11)

61(2) s

β+ (99.99%)

117I

5/2(+)

β+, p (.0029%)

116Te

118Xe

54

64

117.916179(11)

3.8(9) min

β+

118I

0+

119Xe

54

65

118.915411(11)

5.8(3) min

β+

119I

5/2(+)

120Xe

54

66

119.911784(13)

40(1) min

β+

120I

0+

121Xe

54

67

120.911462(12)

40.1(20) min

β+

121I

(5/2+)

122Xe

54

68

121.908368(12)

20.1(1) h

β+

122I

0+

123Xe

54

69

122.908482(10)

2.08(2) h

EC

123I

1/2+

123mXe

185.18(22) keV

5.49(26) µs

7/2(−)

124Xe

54

70

123.905893(2)

Observationally Stable

0+

9.52(3)×10−4

125Xe

54

71

124.9063955(20)

16.9(2) h

β+

125I

1/2(+)

125m1Xe

252.60(14) keV

56.9(9) s

IT

125Xe

9/2(−)

125m2Xe

295.86(15) keV

0.14(3) µs

7/2(+)

126Xe

54

72

125.904274(7)

Observationally Stable

0+

8.90(2)×10−4

127Xe

54

73

126.905184(4)

36.345(3) d

EC

127I

1/2+

127mXe

297.10(8) keV

69.2(9) s

IT

127Xe

9/2−

128Xe

54

74

127.9035313(15)

Stable

0+

0.019102(8)

129Xe

54

75

128.9047794(8)

Stable

1/2+

0.264006(82)

129mXe

236.14(3) keV

8.88(2) d

IT

129Xe

11/2−

130Xe

54

76

129.9035080(8)

Stable

0+

0.040710(13)

131Xe

54

77

130.9050824(10)

Stable

3/2+

0.212324(30)

131mXe

163.930(8) keV

11.934(21) d

IT

131Xe

11/2−

132Xe

54

78

131.9041535(10)

Stable

0+

0.269086(33)

132mXe

2752.27(17) keV

8.39(11) ms

IT

132Xe

(10+)

133Xe

54

79

132.9059107(26)

5.2475(5) d

β−

133Cs

3/2+

133mXe

233.221(18) keV

2.19(1) d

IT

133Xe

11/2−

134Xe

54

80

133.9053945(9)

Observationally Stable

0+

0.104357(21)

134m1Xe

1965.5(5) keV

290(17) ms

IT

134Xe

7−

134m2Xe

3025.2(15) keV

5(1) µs

(10+)

135Xe

54

81

134.907227(5)

9.14(2) h

β−

135Cs

3/2+

135mXe

526.551(13) keV

15.29(5) min

IT (99.99%)

135Xe

11/2−

β− (.004%)

135Cs

136Xe

54

82

135.907219(8)

2.165(0.016 (stat), 0.059 (sys))×1021 y

β−β−

136Ba

0+

0.088573(44)

136mXe

1891.703(14) keV

2.95(9) µs

6+

137Xe

54

83

136.911562(8)

3.818(13) min

β−

137Cs

7/2−

138Xe

54

84

137.91395(5)

14.08(8) min

β−

138Cs

0+

139Xe

54

85

138.918793(22)

39.68(14) s

β−

139Cs

3/2−

140Xe

54

86

139.92164(7)

13.60(10) s

β−

140Cs

0+

141Xe

54

87

140.92665(10)

1.73(1) s

β− (99.45%)

141Cs

5/2(−)

β−, n (.043%)

140Cs

142Xe

54

88

141.92971(11)

1.22(2) s

β− (99.59%)

142Cs

0+

β−, n (.41%)

141Cs

143Xe

54

89

142.93511(21)

0.511(6) s

β−

143Cs

5/2−

144Xe

54

90

143.93851(32)

0.388(7) s

β−

144Cs

0+

β−, n

143Cs

145Xe

54

91

144.94407(32)

188(4) ms

β−

145Cs

(3/2−)

146Xe

54

92

145.94775(43)

146(6) ms

β−

146Cs

0+

147Xe

54

93

146.95356(43)

130(80) ms
[0.10(+10−5) s]

β−

147Cs

3/2−

β−, n

146Cs

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

112Cs

55

57

111.95030(33)

500(100) µs

p

111Xe

1+

α

108I

113Cs

55

58

112.94449(11)

16.7(7) µs

p (99.97%)

112Xe

5/2+

β+ (.03%)

113Xe

114Cs

55

59

113.94145(33)

0.57(2) s

β+ (91.09%)

114Xe

(1+)

β+, p (8.69%)

113I

β+, α (.19%)

110Te

α (.018%)

110I

115Cs

55

60

114.93591(32)

1.4(8) s

β+ (99.93%)

115Xe

9/2+

β+, p (.07%)

114I

116Cs

55

61

115.93337(11)

0.70(4) s

β+ (99.67%)

116Xe

(1+)

β+, p (.279%)

115I

β+, α (.049%)

112Te

116mCs

100(60) keV

3.85(13) s

β+ (99.48%)

116Xe

4+,5,6

β+, p (.51%)

115I

β+, α (.008%)

112Te

117Cs

55

62

116.92867(7)

8.4(6) s

β+

117Xe

(9/2+)

117mCs

150(80) keV

6.5(4) s

β+

117Xe

3/2+

118Cs

55

63

117.926559(14)

14(2) s

β+ (99.95%)

118Xe

2

β+, p (.042%)

117I

β+, α (.0024%)

114Te

118mCs

100(60) keV

17(3) s

β+ (99.95%)

118Xe

(7−)

β+, p (.042%)

117I

β+, α (.0024%)

114Te

119Cs

55

64

118.922377(15)

43.0(2) s

β+

119Xe

9/2+

β+, α (2×10−6%)

115Te

119mCs

50(30) keV

30.4(1) s

β+

119Xe

3/2(+)

120Cs

55

65

119.920677(11)

61.2(18) s

β+

120Xe

2(−)

β+, α (2×10−5%)

116Te

β+, p (7×10−6%)

118I

120mCs

100(60) keV

57(6) s

β+

120Xe

(7−)

β+, α (2×10−5%)

116Te

β+, p (7×10−6%)

118I

121Cs

55

66

120.917229(15)

155(4) s

β+

121Xe

3/2(+)

121mCs

68.5(3) keV

122(3) s

β+ (83%)

121Xe

9/2(+)

IT (17%)

121Cs

122Cs

55

67

121.91611(3)

21.18(19) s

β+

122Xe

1+

β+, α (2×10−7%)

118Te

122m1Cs

45.8 keV

>1 µs

(3)+

122m2Cs

140(30) keV

3.70(11) min

β+

122Xe

8−

122m3Cs

127.0(5) keV

360(20) ms

(5)−

123Cs

55

68

122.912996(13)

5.88(3) min

β+

123Xe

1/2+

123m1Cs

156.27(5) keV

1.64(12) s

IT

123Cs

(11/2)−

123m2Cs

231.63+X keV

114(5) ns

(9/2+)

124Cs

55

69

123.912258(9)

30.9(4) s

β+

124Xe

1+

124mCs

462.55(17) keV

6.3(2) s

IT

124Cs

(7)+

125Cs

55

70

124.909728(8)

46.7(1) min

β+

125Xe

1/2(+)

125mCs

266.6(11) keV

900(30) ms

(11/2−)

126Cs

55

71

125.909452(13)

1.64(2) min

β+

126Xe

1+

126m1Cs

273.0(7) keV

>1 µs

126m2Cs

596.1(11) keV

171(14) µs

127Cs

55

72

126.907418(6)

6.25(10) h

β+

127Xe

1/2+

127mCs

452.23(21) keV

55(3) µs

(11/2)−

128Cs

55

73

127.907749(6)

3.640(14) min

β+

128Xe

1+

129Cs

55

74

128.906064(5)

32.06(6) h

β+

129Xe

1/2+

130Cs

55

75

129.906709(9)

29.21(4) min

β+ (98.4%)

130Xe

1+

β− (1.6%)

130Ba

130mCs

163.25(11) keV

3.46(6) min

IT (99.83%)

130Cs

5−

β+ (.16%)

130Xe

131Cs

55

76

130.905464(5)

9.689(16) d

EC

131Xe

5/2+

132Cs

55

77

131.9064343(20)

6.480(6) d

β+ (98.13%)

132Xe

2+

β− (1.87%)

132Ba

133Cs

55

78

132.905451933(24)

Stable

7/2+

1.0000

134Cs

55

79

133.906718475(28)

2.0652(4) y

β−

134Ba

4+

EC (3×10−4%)

134Xe

134mCs

138.7441(26) keV

2.912(2) h

IT

134Cs

8−

135Cs

55

80

134.9059770(11)

2.3 x106 y

β−

135Ba

7/2+

135mCs

1632.9(15) keV

53(2) min

IT

135Cs

19/2−

136Cs

55

81

135.9073116(20)

13.16(3) d

β−

136Ba

5+

136mCs

518(5) keV

19(2) s

β−

136Ba

8−

IT

136Cs

137Cs

55

82

136.9070895(5)

30.1671(13) y

β− (95%)

137mBa

7/2+

β− (5%)

137Ba

138Cs

55

83

137.911017(10)

33.41(18) min

β−

138Ba

3−

138mCs

79.9(3) keV

2.91(8) min

IT (81%)

138Cs

6−

β− (19%)

138Ba

139Cs

55

84

138.913364(3)

9.27(5) min

β−

139Ba

7/2+

140Cs

55

85

139.917282(9)

63.7(3) s

β−

140Ba

1−

141Cs

55

86

140.920046(11)

24.84(16) s

β− (99.96%)

141Ba

7/2+

β−, n (.0349%)

140Ba

142Cs

55

87

141.924299(11)

1.689(11) s

β− (99.9%)

142Ba

0−

β−, n (.091%)

141Ba

143Cs

55

88

142.927352(25)

1.791(7) s

β− (98.38%)

143Ba

3/2+

β−, n (1.62%)

142Ba

144Cs

55

89

143.932077(28)

994(4) ms

β− (96.8%)

144Ba

1(−)

β−, n (3.2%)

143Ba

144mCs

300(200) keV

<1 s

β−

144Ba

(>3)

IT

144Cs

145Cs

55

90

144.935526(12)

582(6) ms

β− (85.7%)

145Ba

3/2+

β−, n (14.3%)

144Ba

146Cs

55

91

145.94029(8)

0.321(2) s

β− (85.8%)

146Ba

1−

β−, n (14.2%)

145Ba

147Cs

55

92

146.94416(6)

0.235(3) s

β− (71.5%)

147Ba

(3/2+)

β−, n (28.49%)

147Ba

148Cs

55

93

147.94922(62)

146(6) ms

β− (74.9%)

148Ba

β−, n (25.1%)

147Ba

149Cs

55

94

148.95293(21)

150 ms [>50 ms]

β−

149Ba

3/2+

β−, n

148Ba

150Cs

55

95

149.95817(32)

100 ms [>50 ms]

β−

150Ba

β−, n

149Ba

151Cs

55

96

150.96219(54)

60 ms [>50 ms]

β−

151Ba

3/2+

β−, n

150Ba

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

114Ba

56

58

113.95068(15)

530(230) ms
[0.43(+30−15) s]

β+, p (99.59%)

113Xe

0+

α (.37%)

110Xe

β+ (.04%)

114Cs

CD (<.0034%)

102Sn, 12C

115Ba

56

59

114.94737(64)

0.45(5) s

β+

115Cs

(5/2+)

β+, p

114Xe

116Ba

56

60

115.94138(43)

1.3(2) s

β+

116Cs

0+

β+, p

115Xe

117Ba

56

61

116.93850(32)

1.75(7) s

β+

117Cs

(3/2)(+)

β+, α

113I

β+, p

116Xe

118Ba

56

62

117.93304(21)

5.2(2) s

β+

118Cs

0+

β+, p

117Xe

119Ba

56

63

118.93066(21)

5.4(3) s

β+

119Cs

(5/2+)

β+, p

118Xe

120Ba

56

64

119.92604(32)

24(2) s

β+

120Cs

0+

121Ba

56

65

120.92405(15)

29.7(15) s

β+ (99.98%)

121Cs

5/2(+)

β+, p (.02%)

120Xe

122Ba

56

66

121.91990(3)

1.95(15) min

β+

122Cs

0+

123Ba

56

67

122.918781(13)

2.7(4) min

β+

123Cs

5/2(+)

124Ba

56

68

123.915094(13)

11.0(5) min

β+

124Cs

0+

125Ba

56

69

124.914473(12)

3.5(4) min

β+

125Cs

1/2(+)

126Ba

56

70

125.911250(13)

100(2) min

β+

126Cs

0+

127Ba

56

71

126.911094(12)

12.7(4) min

β+

127Cs

1/2+

127mBa

80.33(12) keV

1.9(2) s

IT

127Ba

7/2−

128Ba

56

72

127.908318(11)

2.43(5) d

β+

128Cs

0+

129Ba

56

73

128.908679(12)

2.23(11) h

β+

129Cs

1/2+

129mBa

8.42(6) keV

2.16(2) h

β+

129Cs

7/2+

IT

129Ba

130Ba

56

74

129.9063208(30)

1.6(±1.1)×1021 y

Double EC

130Xe

0+

0.00106(1)

130mBa

2475.12(18) keV

9.54(14) ms

IT

130Ba

8−

131Ba

56

75

130.906941(3)

11.50(6) d

β+

131Cs

1/2+

131mBa

187.14(12) keV

14.6(2) min

IT

131Ba

9/2−

132Ba

56

76

131.9050613(11)

Observationally Stable

0+

0.00101(1)

133Ba

56

77

132.9060075(11)

10.51(5) y

EC

133Cs

1/2+

133mBa

288.247(9) keV

38.9(1) h

IT (99.99%)

133Ba

11/2−

EC (.0096%)

133Cs

134Ba

56

78

133.9045084(4)

Stable

0+

0.02417(18)

135Ba

56

79

134.9056886(4)

Stable

3/2+

0.06592(12)

135mBa

268.22(2) keV

28.7(2) h

IT

135Ba

11/2−

136Ba

56

80

135.9045759(4)

Stable

0+

0.07854(24)

136mBa

2030.466(18) keV

308.4(19) ms

IT

136Ba

7−

137Ba

56

81

136.9058274(5)

Stable

3/2+

0.11232(24)

137m1Ba

661.659(3) keV

2.552(1) min

IT

137Ba

11/2−

137m2Ba

2349.1(4) keV

0.59(10) µs

(17/2−)

138Ba

56

82

137.9052472(5)

Stable

0+

0.71698(42)

138mBa

2090.54(6) keV

800(100) ns

6+

139Ba

56

83

138.9088413(5)

83.06(28) min

β−

139La

7/2−

140Ba

56

84

139.910605(9)

12.752(3) d

β−

140La

0+

141Ba

56

85

140.914411(9)

18.27(7) min

β−

141La

3/2−

142Ba

56

86

141.916453(7)

10.6(2) min

β−

142La

0+

143Ba

56

87

142.920627(14)

14.5(3) s

β−

143La

5/2−

144Ba

56

88

143.922953(14)

11.5(2) s

β−

144La

0+

145Ba

56

89

144.92763(8)

4.31(16) s

β−

145La

5/2−

146Ba

56

90

145.93022(8)

2.22(7) s

β− (99.98%)

146La

0+

β−, n (.02%)

145La

147Ba

56

91

146.93495(22)

0.893(1) s

β− (99.94%)

147La

(3/2+)

β−, n (.06%)

146La

148Ba

56

92

147.93772(9)

0.612(17) s

β− (99.6%)

148La

0+

β−, n (.4%)

147La

149Ba

56

93

148.94258(21)

344(7) ms

β− (99.57%)

149La

3/2−

β−, n (.43%)

148La

150Ba

56

94

149.94568(43)

300 ms

β−

150La

0+

β−, n (rare)

149La

151Ba

56

95

150.95081(43)

200 ms [>300 ns]

β−

151La

3/2−

152Ba

56

96

151.95427(54)

100 ms

β−

152La

0+

153Ba

56

97

152.95961(86)

80 ms

β−

153La

5/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

117La

57

60

116.95007(43)

23.5(26) ms

β+

117Ba

(3/2+,3/2−)

p

116Ba

117mLa

151(12) keV

10(5) ms

(9/2+)

118La

57

61

117.94673(32)

200 ms

β+

118Ba

119La

57

62

118.94099(43)

1 s

β+

119Ba

11/2−

120La

57

63

119.93807(54)

2.8(2) s

β+

120Ba

β+, p

119Cs

121La

57

64

120.93301(54)

5.3(2) s

β+

121Ba

11/2−

β+, p

120Cs

122La

57

65

121.93071(32)

8.6(5) s

β+

122Ba

β+, p

121Cs

123La

57

66

122.92624(21)

17(3) s

β+

123Ba

11/2−

124La

57

67

123.92457(6)

29.21(17) s

β+

124Ba

(7−,8−)

124mLa

100(100) keV

21(4) s

low(+)

125La

57

68

124.920816(28)

64.8(12) s

β+

125Ba

(11/2−)

125mLa

107.0(10) keV

390(40) ms

(3/2+)

126La

57

69

125.91951(10)

54(2) s

β+

126Ba

(5)(+)

126mLa

210(410) keV

20(20) s

(0−,1−,2−)

127La

57

70

126.916375(28)

5.1(1) min

β+

127Ba

(11/2−)

127mLa

14.8(12) keV

3.7(4) min

β+

127Ba

(3/2+)

IT

127La

128La

57

71

127.91559(6)

5.18(14) min

β+

128Ba

(5+)

128mLa

100(100) keV

<1.4 min

IT

128La

(1+,2−)

129La

57

72

128.912693(22)

11.6(2) min

β+

129Ba

3/2+

129mLa

172.1(4) keV

560(50) ms

IT

129La

11/2−

130La

57

73

129.912369(28)

8.7(1) min

β+

130Ba

3(+)

131La

57

74

130.91007(3)

59(2) min

β+

131Ba

3/2+

131mLa

304.52(24) keV

170(10) µs

11/2−

132La

57

75

131.91010(4)

4.8(2) h

β+

132Ba

2−

132mLa

188.18(11) keV

24.3(5) min

IT (76%)

132La

6−

β+ (24%)

132Ba

133La

57

76

132.90822(3)

3.912(8) h

β+

133Ba

5/2+

134La

57

77

133.908514(21)

6.45(16) min

β+

134Ba

1+

135La

57

78

134.906977(11)

19.5(2) h

β+

135Ba

5/2+

136La

57

79

135.90764(6)

9.87(3) min

β+

136Ba

1+

136mLa

255(9) keV

114(3) ms

IT

136La

(8)(−)

137La

57

80

136.906494(14)

6(2)×104 y

EC

137Ba

7/2+

138La

57

81

137.907112(4)

1.02(1)×1011 y

β+ (66.4%)

138Ba

5+

9.0(1)×10−4

β− (33.6%)

138Ce

138mLa

72.57(3) keV

116(5) ns

(3)+

139La

57

82

138.9063533(26)

Stable

7/2+

0.99910(1)

140La

57

83

139.9094776(26)

1.6781(3) d

β−

140Ce

3−

141La

57

84

140.910962(5)

3.92(3) h

β−

141Ce

(7/2+)

142La

57

85

141.914079(6)

91.1(5) min

β−

142Ce

2−

143La

57

86

142.916063(17)

14.2(1) min

β−

143Ce

(7/2)+

144La

57

87

143.91960(5)

40.8(4) s

β−

144Ce

(3−)

145La

57

88

144.92165(10)

24.8(20) s

β−

145Ce

(5/2+)

146La

57

89

145.92579(8)

6.27(10) s

β− (99.99%)

146Ce

2−

β−, n (.007%)

145Ce

146mLa

130(130) keV

10.0(1) s

β−

146Ce

(6−)

147La

57

90

146.92824(5)

4.015(8) s

β− (99.96%)

147Ce

(5/2+)

β−, n (.04%)

146Ce

148La

57

91

147.93223(6)

1.26(8) s

β− (99.85%)

148Ce

(2−)

β−, n (.15%)

147Ce

149La

57

92

148.93473(34)

1.05(3) s

β− (98.6%)

149Ce

5/2+

β−, n (1.4%)

148Ce

150La

57

93

149.93877(43)

510(30) ms

β− (97.3%)

150Ce

(3+)

β−, n (2.7%)

149Ce

151La

57

94

150.94172(43)

300 ms [>300 ns]

β−

151Ce

5/2+

152La

57

95

151.94625(43)

200 ms [>300 ns]

β−

152Ce

153La

57

96

152.94962(64)

150 ms [>300 ns]

β−

153Ce

5/2+

154La

57

97

153.95450(64)

100 ms

β−

154Ce

155La

57

98

154.95835(86)

60 ms

β−

155Ce

5/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

119Ce

58

61

118.95276(64)

200 ms

β+

119La

5/2+

120Ce

58

62

119.94664(75)

250 ms

β+

120La

0+

121Ce

58

63

120.94342(54)

1.1(1) s

β+

121La

(5/2)(+)

122Ce

58

64

121.93791(43)

2 s

β+

122La

0+

β+, p

121Ba

123Ce

58

65

122.93540(32)

3.8(2) s

β+

123La

(5/2)(+)

β+, p

122Ba

124Ce

58

66

123.93041(32)

9.1(12) s

β+

124La

0+

125Ce

58

67

124.92844(21)

9.3(3) s

β+

125La

(7/2−)

β+, p

124Ba

126Ce

58

68

125.92397(3)

51.0(3) s

β+

126La

0+

127Ce

58

69

126.92273(6)

29(2) s

β+

127La

5/2+

128Ce

58

70

127.91891(3)

3.93(2) min

β+

128La

0+

129Ce

58

71

128.91810(3)

3.5(3) min

β+

129La

(5/2+)

130Ce

58

72

129.91474(3)

22.9(5) min

β+

130La

0+

130mCe

2453.6(3) keV

100(8) ns

(7−)

131Ce

58

73

130.91442(4)

10.2(3) min

β+

131La

(7/2+)

131mCe

61.8(1) keV

5.0(10) min

β+

131La

(1/2+)

132Ce

58

74

131.911460(22)

3.51(11) h

β+

132La

0+

132mCe

2340.8(5) keV

9.4(3) ms

IT

132Ce

(8−)

133Ce

58

75

132.911515(18)

97(4) min

β+

133La

1/2+

133mCe

37.1(8) keV

4.9(4) d

β+

133La

9/2−

134Ce

58

76

133.908925(22)

3.16(4) d

EC

134La

0+

135Ce

58

77

134.909151(12)

17.7(3) h

β+

135La

1/2(+)

135mCe

445.8(2) keV

20(1) s

IT

135Ce

(11/2−)

136Ce

58

78

135.907172(14)

Observationally Stable

0+

0.00185(2)

0.00185–0.00186

136mCe

3095.5(4) keV

2.2(2) µs

10+

137Ce

58

79

136.907806(14)

9.0(3) h

β+

137La

3/2+

137mCe

254.29(5) keV

34.4(3) h

IT (99.22%)

137Ce

11/2−

β+ (.779%)

137La

138Ce

58

80

137.905991(11)

Observationally Stable

0+

0.00251(2)

0.00251–0.00254

138mCe

2129.17(12) keV

8.65(20) ms

IT

138Ce

7-

139Ce

58

81

138.906653(8)

137.641(20) d

EC

139La

3/2+

139mCe

754.24(8) keV

56.54(13) s

IT

139Ce

11/2−

140Ce

58

82

139.9054387(26)

Stable

0+

0.88450(51)

0.88446–0.88449

140mCe

2107.85(3) keV

7.3(15) µs

6+

141Ce

58

83

140.9082763(26)

32.508(13) d

β−

141Pr

7/2−

142Ce

58

84

141.909244(3)

Observationally Stable

0+

0.11114(51)

0.11114–0.11114

143Ce

58

85

142.912386(3)

33.039(6) d

β−

143Pr

3/2−

144Ce

58

86

143.913647(4)

284.91(5) d

β−

144mPr

0+

145Ce

58

87

144.91723(4)

3.01(6) min

β−

145Pr

(3/2−)

146Ce

58

88

145.91876(7)

13.52(13) min

β−

146Pr

0+

147Ce

58

89

146.92267(3)

56.4(10) s

β−

147Pr

(5/2−)

148Ce

58

90

147.92443(3)

56(1) s

β−

148Pr

0+

149Ce

58

91

148.9284(1)

5.3(2) s

β−

149Pr

(3/2−)

150Ce

58

92

149.93041(5)

4.0(6) s

β−

150Pr

0+

151Ce

58

93

150.93398(11)

1.02(6) s

β−

151Pr

3/2−

152Ce

58

94

151.93654(21)

1.4(2) s

β−

152Pr

0+

153Ce

58

95

152.94058(43)

500 ms [>300 ns]

β−

153Pr

3/2−

154Ce

58

96

153.94342(54)

300 ms [>300 ns]

β−

154Pr

0+

155Ce

58

97

154.94804(64)

200 ms [>300 ns]

β−

155Pr

5/2−

156Ce

58

98

155.95126(64)

150 ms

β−

156Pr

0+

157Ce

58

99

156.95634(75)

50 ms

β−

157Pr

7/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

121Pr

59

62

120.95536(75)

600(300) ms

p

120Ce

(3/2−)

β+ (rare)

121Ce

β+, p (rare)

120La

122Pr

59

63

121.95181(54)

500 ms

β+

122Ce

123Pr

59

64

122.94596(64)

800 ms

β+

123Ce

3/2+

124Pr

59

65

123.94296(64)

1.2(2) s

β+

124Ce

β+, p (rare)

123La

125Pr

59

66

124.93783(43)

3.3(7) s

β+

125Ce

3/2+

β+, p (rare)

124La

126Pr

59

67

125.93531(21)

3.12(18) s

β+

126Ce

(4,5,6)

β+, p (rare)

125La

127Pr

59

68

126.93083(21)

4.2(3) s

β+

127Ce

3/2+

127mPr

600(200) keV

50 ms

11/2−

128Pr

59

69

127.92879(3)

2.84(9) s

β+

128Ce

(3+)

β+, p (rare)

127La

129Pr

59

70

128.92510(3)

32(3) s

β+

129Ce

(11/2−)

129mPr

382.7(5) keV

1 ms

β+

129Ce

(11/2−)

130Pr

59

71

129.92359(7)

40.0(4) s

β+

130Ce

(6,7)(+)

130mPr

100(100) keV

10 s

2+

131Pr

59

72

130.92026(6)

1.50(3) min

β+

131Ce

(3/2+)

131mPr

152.4(2) keV

5.7(2) s

IT (96.4%)

131Pr

(11/2−)

β+ (3.59%)

131Ce

132Pr

59

73

131.91926(6)

1.49(11) min

β+

132Ce

(2+)

132mPr

0(100) keV

20 s

β+

132Ce

(5+)

133Pr

59

74

132.916331(13)

6.5(3) min

β+

133Ce

(3/2+)

133mPr

192.05(14) keV

1.1(2) µs

(11/2−)

134Pr

59

75

133.91571(4)

17(2) min

β+

134Ce

(5−)

134mPr

0(100) keV

~11 min

β+

134Ce

2−

135Pr

59

76

134.913112(13)

24(2) min

β+

135Ce

3/2(+)

135mPr

358.06(6) keV

105(10) µs

(11/2−)

136Pr

59

77

135.912692(13)

13.1(1) min

β+

136Ce

2+

137Pr

59

78

136.910705(13)

1.28(3) h

β+

137Ce

5/2+

137mPr

561.22(23) keV

2.66(7) µs

11/2−

138Pr

59

79

137.910755(15)

1.45(5) min

β+

138Ce

1+

138mPr

348(23) keV

2.12(4) h

β+

138Ce

7−

139Pr

59

80

138.908938(8)

4.41(4) h

β+

139Ce

5/2+

140Pr

59

81

139.909076(7)

3.39(1) min

β+

140Ce

1+

140m1Pr

127.5(3) keV

0.35(2) µs

5+

140m2Pr

763.3(7) keV

3.05(20) µs

(8)−

141Pr

59

82

140.9076528(26)

Stable

5/2+

1.0000

142Pr

59

83

141.9100448(26)

19.12(4) h

β− (99.98%)

142Nd

2−

EC (.0164%)

142Ce

142mPr

3.694(3) keV

14.6(5) min

IT

142Pr

5−

143Pr

59

84

142.9108169(28)

13.57(2) d

β−

143Nd

7/2+

144Pr

59

85

143.913305(4)

17.28(5) min

β−

144Nd

0−

144mPr

59.03(3) keV

7.2(3) min

IT (99.93%)

144Pr

3−

β− (.07%)

144Nd

145Pr

59

86

144.914512(8)

5.984(10) h

β−

145Nd

7/2+

146Pr

59

87

145.91764(7)

24.15(18) min

β−

146Nd

(2)−

147Pr

59

88

146.918996(25)

13.4(4) min

β−

147Nd

(3/2+)

148Pr

59

89

147.922135(28)

2.29(2) min

β−

148Nd

1−

148mPr

50(30) keV

2.01(7) min

β−

148Nd

(4)

149Pr

59

90

148.92372(9)

2.26(7) min

β−

149Nd

(5/2+)

150Pr

59

91

149.926673(28)

6.19(16) s

β−

150Nd

(1)−

151Pr

59

92

150.928319(25)

18.90(7) s

β−

151Nd

(3/2)(−)

152Pr

59

93

151.93150(13)

3.63(12) s

β−

152Nd

4+

153Pr

59

94

152.93384(11)

4.28(11) s

β−

153Nd

5/2−

154Pr

59

95

153.93752(16)

2.3(1) s

β−

154Nd

(3+,2+)

155Pr

59

96

154.94012(32)

1 s [>300 ns]

β−

155Nd

5/2−

156Pr

59

97

155.94427(43)

500 ms [>300 ns]

β−

156Nd

157Pr

59

98

156.94743(43)

300 ms

β−

157Nd

5/2−

158Pr

59

99

157.95198(64)

200 ms

β−

158Nd

159Pr

59

100

158.95550(75)

100 ms

β−

159Nd

5/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

124Nd

60

64

123.95223(64)

500 ms

0+

125Nd

60

65

124.94888(43)

600(150) ms

5/2(+)

126Nd

60

66

125.94322(43)

1 s [>200 ns]

β+

126Pr

0+

127Nd

60

67

126.94050(43)

1.8(4) s

β+

127Pr

5/2+

β+, p (rare)

126Ce

128Nd

60

68

127.93539(21)

5 s

β+

128Pr

0+

β+, p (rare)

127Ce

129Nd

60

69

128.93319(22)

4.9(2) s

β+

129Pr

5/2+

β+, p (rare)

128Ce

130Nd

60

70

129.92851(3)

21(3) s

β+

130Pr

0+

131Nd

60

71

130.92725(3)

33(3) s

β+

131Pr

(5/2)(+)

β+, p (rare)

130Ce

132Nd

60

72

131.923321(26)

1.56(10) min

β+

132Pr

0+

133Nd

60

73

132.92235(5)

70(10) s

β+

133Pr

(7/2+)

133m1Nd

127.97(11) keV

~70 s

β+

133Pr

(1/2)+

133m2Nd

176.10(10) keV

~300 ns

(9/2–)

134Nd

60

74

133.918790(13)

8.5(15) min

β+

134Pr

0+

134mNd

2293.1(4) keV

410(30) µs

(8)–

135Nd

60

75

134.918181(21)

12.4(6) min

β+

135Pr

9/2(–)

135mNd

65.0(2) keV

5.5(5) min

β+

135Pr

(1/2+)

136Nd

60

76

135.914976(13)

50.65(33) min

β+

136Pr

0+

137Nd

60

77

136.914567(12)

38.5(15) min

β+

137Pr

1/2+

137mNd

519.43(17) keV

1.60(15) s

IT

137Nd

(11/2–)

138Nd

60

78

137.911950(13)

5.04(9) h

β+

138Pr

0+

138mNd

3174.9(4) keV

410(50) ns

(10+)

139Nd

60

79

138.911978(28)

29.7(5) min

β+

139Pr

3/2+

139m1Nd

231.15(5) keV

5.50(20) h

β+ (88.2%)

139Pr

11/2–

IT (11.8%)

139Nd

139m2Nd

2570.9+X keV

≥141 ns

140Nd

60

80

139.90955(3)

3.37(2) d

EC

140Pr

0+

140mNd

2221.4(1) keV

600(50) µs

7–

141Nd

60

81

140.909610(4)

2.49(3) h

β+

141Pr

3/2+

141mNd

756.51(5) keV

62.0(8) s

IT (99.95%)

141Nd

11/2–

β+ (.05%)

141Pr

142Nd

60

82

141.9077233(25)

Stable

0+

0.272(5)

0.2680–0.2730

143Nd

60

83

142.9098143(25)

Observationally Stable

7/2−

0.122(2)

0.1212–0.1232

144Nd

60

84

143.9100873(25)

2.29(16)×1015 y

α

140Ce

0+

0.238(3)

0.2379–0.2397

145Nd

60

85

144.9125736(25)

Observationally Stable

7/2−

0.083(1)

0.0823–0.0835

146Nd

60

86

145.9131169(25)

Observationally Stable

0+

0.172(3)

0.1706–0.1735

147Nd

60

87

146.9161004(25)

10.98(1) d

β−

147Pm

5/2−

148Nd

60

88

147.916893(3)

Observationally Stable

0+

0.057(1)

0.0566–0.0578

149Nd

60

89

148.920149(3)

1.728(1) h

β−

149Pm

5/2−

150Nd

60

90

149.920891(3)

6.7(7)×1018 y

β−β−

150Sm

0+

0.056(2)

0.0553–0.0569

151Nd

60

91

150.923829(3)

12.44(7) min

β−

151Pm

3/2+

152Nd

60

92

151.924682(26)

11.4(2) min

β−

152Pm

0+

153Nd

60

93

152.927698(29)

31.6(10) s

β−

153Pm

(3/2)−

154Nd

60

94

153.92948(12)

25.9(2) s

β−

154Pm

0+

154m1Nd

480(150) keV

1.3(5) µs

154m2Nd

1349(10) keV

>1 µs

(5−)

155Nd

60

95

154.93293(16)

8.9(2) s

β−

155Pm

3/2−

156Nd

60

96

155.93502(22)

5.49(7) s

β−

156Pm

0+

156mNd

1432(5) keV

135 ns

5−

157Nd

60

97

156.93903(21)

2 s [>300 ns]

β−

157Pm

5/2−

158Nd

60

98

157.94160(43)

700 ms [>300 ns]

β−

158Pm

0+

159Nd

60

99

158.94609(54)

500 ms

β−

159Pm

7/2+

160Nd

60

100

159.94909(64)

300 ms

β−

160Pm

0+

161Nd

60

101

160.95388(75)

200 ms

β−

161Pm

1/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

126Pm

61

65

125.95752(54)

0.5 s

127Pm

61

66

126.95163(64)

1 s

5/2+

128Pm

61

67

127.94842(43)

1.0(3) s

β+

128Nd

6+

p

127Nd

129Pm

61

68

128.94316(43)

3 s [>200 ns]

β+

129Nd

5/2+

130Pm

61

69

129.94045(32)

2.6(2) s

β+

130Nd

(5+,6+,4+)

β+, p (rare)

129Pr

131Pm

61

70

130.93587(21)

6.3(8) s

β+, p

130Pr

5/2+

β+

131Nd

132Pm

61

71

131.93375(21)

6.2(6) s

β+

132Nd

(3+)

β+, p (5×10−5%)

131Pr

133Pm

61

72

132.92978(5)

15(3) s

β+

133Nd

(3/2+)

133mPm

130.4(10) keV

10 s

β+

133Nd

(11/2−)

IT

133Pm

134Pm

61

73

133.92835(6)

22(1) s

β+

134Nd

(5+)

134mPm

0(100) keV

~5 s

IT

134Pm

(2+)

135Pm

61

74

134.92488(6)

49(3) s

β+

135Nd

(5/2+,3/2+)

135mPm

50(100) keV

40(3) s

β+

135Nd

(11/2−)

136Pm

61

75

135.92357(8)

107(6) s

β+

136Nd

(5−)

136mPm

130(120) keV

47(2) s

β+

136Nd

(2+)

137Pm

61

76

136.920479(14)

2 min

β+

137Nd

5/2+

137mPm

150(50) keV

2.4(1) min

β+

137Nd

11/2−

138Pm

61

77

137.919548(30)

10(2) s

β+

138Nd

1+

138mPm

30(30) keV

3.24(5) min

β+

138Nd

5−

139Pm

61

78

138.916804(14)

4.15(5) min

β+

139Nd

(5/2)+

139mPm

188.7(3) keV

180(20) ms

IT (99.83%)

139Pm

(11/2)−

β+ (0.17%)

139Nd

140Pm

61

79

139.91604(4)

9.2(2) s

β+

140Nd

1+

140mPm

420(40) keV

5.95(5) min

β+

140Nd

8−

141Pm

61

80

140.913555(15)

20.90(5) min

β+

141Nd

5/2+

141m1Pm

628.40(10) keV

630(20) ns

11/2−

141m2Pm

2530.9(5) keV

>2 µs

142Pm

61

81

141.912874(27)

40.5(5) s

β+

142Nd

1+

142mPm

883.17(16) keV

2.0(2) ms

IT

142Pm

(8)−

143Pm

61

82

142.910933(4)

265(7) d

β+

143Nd

5/2+

144Pm

61

83

143.912591(3)

363(14) d

β+

144Nd

5−

144m1Pm

840.90(5) keV

780(200) ns

(9)+

144m2Pm

8595.8(22) keV

~2.7 µs

(27+)

145Pm

61

84

144.912749(3)

17.7(4) y

EC

145Nd

5/2+

α (2.8×10−7%)

141Pr

146Pm

61

85

145.914696(5)

5.53(5) y

EC (66%)

146Nd

3−

β− (34%)

146Sm

147Pm

61

86

146.9151385(26)

2.6234(2) y

β−

147Sm

7/2+

148Pm

61

87

147.917475(7)

5.368(2) d

β−

148Sm

1−

148mPm

137.9(3) keV

41.29(11) d

β− (95%)

148Sm

5−,6−

IT (5%)

148Pm

149Pm

61

88

148.918334(4)

53.08(5) h

β−

149Sm

7/2+

149mPm

240.214(7) keV

35(3) µs

11/2−

150Pm

61

89

149.920984(22)

2.68(2) h

β−

150Sm

(1−)

151Pm

61

90

150.921207(6)

28.40(4) h

β−

151Sm

5/2+

152Pm

61

91

151.923497(28)

4.12(8) min

β−

152Sm

1+

152m1Pm

140(90) keV

7.52(8) min

4−

152m2Pm

250(150) keV

13.8(2) min

(8)

153Pm

61

92

152.924117(12)

5.25(2) min

β−

153Sm

5/2−

154Pm

61

93

153.92646(5)

1.73(10) min

β−

154Sm

(0,1)

154mPm

120(120) keV

2.68(7) min

β−

154Sm

(3,4)

155Pm

61

94

154.92810(3)

41.5(2) s

β−

155Sm

(5/2−)

156Pm

61

95

155.93106(4)

26.70(10) s

β−

156Sm

4−

157Pm

61

96

156.93304(12)

10.56(10) s

β−

157Sm

(5/2−)

158Pm

61

97

157.93656(14)

4.8(5) s

β−

158Sm

159Pm

61

98

158.93897(21)

1.47(15) s

β−

159Sm

5/2−

160Pm

61

99

159.94299(32)

2 s

β−

160Sm

161Pm

61

100

160.94586(54)

700 ms

β−

161Sm

5/2−

162Pm

61

101

161.95029(75)

500 ms

β−

162Sm

163Pm

61

102

162.95368(86)

200 ms

β−

163Sm

5/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

128Sm

62

66

127.95808(54)

0.5 s

0+

129Sm

62

67

128.95464(54)

550(100) ms

5/2+

130Sm

62

68

129.94892(43)

1 s

β+

130Pm

0+

131Sm

62

69

130.94611(32)

1.2(2) s

β+

131Pm

5/2+

β+, p (rare)

130Nd

132Sm

62

70

131.94069(32)

4.0(3) s

β+

132Pm

0+

β+, p

131Nd

133Sm

62

71

132.93867(21)

2.90(17) s

β+

133Pm

(5/2+)

β+, p

132Nd

134Sm

62

72

133.93397(21)

10(1) s

β+

134Pm

0+

135Sm

62

73

134.93252(17)

10.3(5) s

β+ (99.98%)

135Pm

(7/2+)

β+, p (.02%)

134Nd

135mSm

0(300) keV

2.4(9) s

β+

135Pm

(3/2+,5/2+)

136Sm

62

74

135.928276(13)

47(2) s

β+

136Pm

0+

136mSm

2264.7(11) keV

15(1) µs

(8−)

137Sm

62

75

136.92697(5)

45(1) s

β+

137Pm

(9/2−)

137mSm

180(50) keV

20 s

β+

137Pm

1/2+

138Sm

62

76

137.923244(13)

3.1(2) min

β+

138Pm

0+

139Sm

62

77

138.922297(12)

2.57(10) min

β+

139Pm

1/2+

139mSm

457.40(22) keV

10.7(6) s

IT (93.7%)

139Sm

11/2−

β+ (6.3%)

139Pm

140Sm

62

78

139.918995(13)

14.82(12) min

β+

140Pm

0+

141Sm

62

79

140.918476(9)

10.2(2) min

β+

141Pm

1/2+

141mSm

176.0(3) keV

22.6(2) min

β+ (99.69%)

141Pm

11/2−

IT (.31%)

141Sm

142Sm

62

80

141.915198(6)

72.49(5) min

β+

142Pm

0+

143Sm

62

81

142.914628(4)

8.75(8) min

β+

143Pm

3/2+

143m1Sm

753.99(16) keV

66(2) s

IT (99.76%)

143Sm

11/2−

β+ (.24%)

143Pm

143m2Sm

2793.8(13) keV

30(3) ms

23/2(−)

144Sm

62

82

143.911999(3)

Observationally Stable

0+

0.0307(7)

144mSm

2323.60(8) keV

880(25) ns

6+

145Sm

62

83

144.913410(3)

340(3) d

EC

145Pm

7/2−

145mSm

8786.2(7) keV

990(170) ns
[0.96(+19−15) µs]

(49/2+)

146Sm

62

84

145.913041(4)

6.8(7)×107 y

α

142Nd

0+

Trace

147Sm

62

85

146.9148979(26)

1.06(2)×1011 y

α

143Nd

7/2−

0.1499(18)

148Sm

62

86

147.9148227(26)

7(3)×1015 y

α

144Nd

0+

0.1124(10)

149Sm

62

87

148.9171847(26)

Observationally Stable

7/2−

0.1382(7)

150Sm

62

88

149.9172755(26)

Observationally Stable

0+

0.0738(1)

151Sm

62

89

150.9199324(26)

88.8(24) y

β−

151Eu

5/2−

151mSm

261.13(4) keV

1.4(1) µs

(11/2)−

152Sm

62

90

151.9197324(27)

Observationally Stable

0+

0.2675(16)

153Sm

62

91

152.9220974(27)

46.284(4) h

β−

153Eu

3/2+

153mSm

98.37(10) keV

10.6(3) ms

IT

153Sm

11/2−

154Sm

62

92

153.9222093(27)

Observationally Stable

0+

0.2275(29)

155Sm

62

93

154.9246402(28)

22.3(2) min

β−

155Eu

3/2−

156Sm

62

94

155.925528(10)

9.4(2) h

β−

156Eu

0+

156mSm

1397.55(9) keV

185(7) ns

5−

157Sm

62

95

156.92836(5)

8.03(7) min

β−

157Eu

(3/2−)

158Sm

62

96

157.92999(8)

5.30(3) min

β−

158Eu

0+

159Sm

62

97

158.93321(11)

11.37(15) s

β−

159Eu

5/2−

160Sm

62

98

159.93514(21)

9.6(3) s

β−

160Eu

0+

161Sm

62

99

160.93883(32)

4.8(8) s

β−

161Eu

7/2+

162Sm

62

100

161.94122(54)

2.4(5) s

β−

162Eu

0+

163Sm

62

101

162.94536(75)

1 s

β−

163Eu

1/2−

164Sm

62

102

163.94828(86)

500 ms

β−

164Eu

0+

165Sm

62

103

164.95298(97)

200 ms

β−

165Eu

5/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

130Eu

63

67

129.96357(54)

1.1(5) ms
[0.9(+5−3) ms]

2+

131Eu

63

68

130.95775(43)

17.8(19) ms

3/2+

132Eu

63

69

131.95437(43)

100 ms

β+

132Sm

p

131Sm

133Eu

63

70

132.94924(32)

200 ms

β+

133Sm

11/2−

134Eu

63

71

133.94651(21)

0.5(2) s

β+

134Sm

β+, p (rare)

133Pm

135Eu

63

72

134.94182(32)

1.5(2) s

β+

135Sm

11/2−

β+, p

134Pm

136Eu

63

73

135.93960(21)

3.3(3) s

β+ (99.91%)

136Sm

(7+)

β+, p (.09%)

135Pm

136mEu

0(500) keV

3.8(3) s

β+ (99.91%)

136Sm

(3+)

β+, p (.09%)

135Pm

137Eu

63

74

136.93557(21)

8.4(5) s

β+

137Sm

11/2−

138Eu

63

75

137.93371(3)

12.1(6) s

β+

138Sm

(6−)

139Eu

63

76

138.929792(14)

17.9(6) s

β+

139Sm

(11/2)−

140Eu

63

77

139.92809(6)

1.51(2) s

β+

140Sm

1+

140mEu

210(15) keV

125(2) ms

IT (99%)

140Eu

5−

β+(1%)

140Sm

141Eu

63

78

140.924931(14)

40.7(7) s

β+

141Sm

5/2+

141mEu

96.45(7) keV

2.7(3) s

IT (86%)

141Eu

11/2−

β+ (14%)

141Sm

142Eu

63

79

141.92343(3)

2.36(10) s

β+

142Sm

1+

142mEu

460(30) keV

1.223(8) min

β+

142Sm

8−

143Eu

63

80

142.920298(12)

2.59(2) min

β+

143Sm

5/2+

143mEu

389.51(4) keV

50.0(5) µs

11/2−

144Eu

63

81

143.918817(12)

10.2(1) s

β+

144Sm

1+

144mEu

1127.6(6) keV

1.0(1) µs

(8−)

145Eu

63

82

144.916265(4)

5.93(4) d

β+

145Sm

5/2+

145mEu

716.0(3) keV

490 ns

11/2−

146Eu

63

83

145.917206(7)

4.61(3) d

β+

146Sm

4−

146mEu

666.37(16) keV

235(3) µs

9+

147Eu

63

84

146.916746(3)

24.1(6) d

β+ (99.99%)

147Sm

5/2+

α (.0022%)

143Pm

148Eu

63

85

147.918086(11)

54.5(5) d

β+ (100%)

148Sm

5−

α (9.39×10−7%)

144Pm

149Eu

63

86

148.917931(5)

93.1(4) d

EC

149Sm

5/2+

150Eu

63

87

149.919702(7)

36.9(9) y

β+

150Sm

5(−)

150mEu

42.1(5) keV

12.8(1) h

β− (89%)

150Gd

0−

β+ (11%)

150Sm

IT (5×10−8%)

150Eu

151Eu

63

88

150.9198502(26)

4.62×1018 y

α

147Pm

5/2+

0.4781(6)

151mEu

196.245(10) keV

58.9(5) µs

11/2−

152Eu

63

89

151.9217445(26)

13.537(6) y

EC (72.09%), β+ (0.027%)

152Sm

3−

β− (27.9%)

152Gd

152m1Eu

45.5998(4) keV

9.3116(13) h

β− (72%)

152Gd

0−

β+ (28%)

152Sm

152m2Eu

65.2969(4) keV

0.94(8) µs

1−

152m3Eu

78.2331(4) keV

165(10) ns

1+

152m4Eu

89.8496(4) keV

384(10) ns

4+

152m5Eu

147.86(10) keV

96(1) min

8−

153Eu

63

90

152.9212303(26)

Observationally Stable

5/2+

0.5219(6)

154Eu

63

91

153.9229792(26)

8.593(4) y

β− (99.98%)

154Gd

3−

EC (.02%)

154Sm

154m1Eu

145.3(3) keV

46.3(4) min

IT

154Eu

(8−)

154m2Eu

68.1702(4) keV

2.2(1) µs

2+

155Eu

63

92

154.9228933(27)

4.7611(13) y

β−

155Gd

5/2+

156Eu

63

93

155.924752(6)

15.19(8) d

β−

156Gd

0+

157Eu

63

94

156.925424(6)

15.18(3) h

β−

157Gd

5/2+

158Eu

63

95

157.92785(8)

45.9(2) min

β−

158Gd

(1−)

159Eu

63

96

158.929089(8)

18.1(1) min

β−

159Gd

5/2+

160Eu

63

97

159.93197(22)

38(4) s

β−

160Gd

1(−)

161Eu

63

98

160.93368(32)

26(3) s

β−

161Gd

5/2+

162Eu

63

99

161.93704(32)

10.6(10) s

β−

162Gd

163Eu

63

100

162.93921(54)

6 s

β−

163Gd

5/2+

164Eu

63

101

163.94299(64)

2 s

β−

164Gd

165Eu

63

102

164.94572(75)

1 s

β−

165Gd

5/2+

166Eu

63

103

165.94997(86)

400 ms

β−

166Gd

167Eu

63

104

166.95321(86)

200 ms

β−

167Gd

5/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

134Gd

64

70

133.95537(43)

0.4 s

0+

135Gd

64

71

134.95257(54)

1.1(2) s

3/2−

136Gd

64

72

135.94734(43)

1 s [>200 ns]

β+

136Eu

137Gd

64

73

136.94502(43)

2.2(2) s

β+

137Eu

7/2+

β+, p (rare)

136Sm

138Gd

64

74

137.94012(21)

4.7(9) s

β+

138Eu

0+

138mGd

2232.7(11) keV

6(1) µs

(8−)

139Gd

64

75

138.93824(21)

5.7(3) s

β+

139Eu

9/2−

β+, p (rare)

138Sm

139mGd

250(150) keV

4.8(9) s

1/2+

140Gd

64

76

139.93367(3)

15.8(4) s

β+

140Eu

0+

141Gd

64

77

140.932126(21)

14(4) s

β+ (99.97%)

141Eu

(1/2+)

β+, p (.03%)

140Sm

141mGd

377.8(2) keV

24.5(5) s

β+ (89%)

141Eu

(11/2−)

IT (11%)

141Gd

142Gd

64

78

141.92812(3)

70.2(6) s

β+

142Eu

0+

143Gd

64

79

142.92675(22)

39(2) s

β+

143Eu

(1/2)+

β+, α (rare)

139Pm

β+, p (rare)

142Sm

143mGd

152.6(5) keV

110.0(14) s

β+

143Eu

(11/2−)

β+, α (rare)

139Pm

β+, p (rare)

142Sm

144Gd

64

80

143.92296(3)

4.47(6) min

β+

144Eu

0+

145Gd

64

81

144.921709(20)

23.0(4) min

β+

145Eu

1/2+

145mGd

749.1(2) keV

85(3) s

IT (94.3%)

145Gd

11/2−

β+ (5.7%)

145Eu

146Gd

64

82

145.918311(5)

48.27(10) d

EC

146Eu

0+

147Gd

64

83

146.919094(3)

38.06(12) h

β+

147Eu

7/2−

147mGd

8587.8(4) keV

510(20) ns

(49/2+)

148Gd

64

84

147.918115(3)

74.6(30) y

α

144Sm

0+

β+β+ (rare)

148Sm

149Gd

64

85

148.919341(4)

9.28(10) d

β+

149Eu

7/2−

α (4.34×10−4%)

145Sm

150Gd

64

86

149.918659(7)

1.79(8)×106 y

α

146Sm

0+

β+β+ (rare)

150Sm

151Gd

64

87

150.920348(4)

124(1) d

EC

151Eu

7/2−

α (10−6%)

147Sm

152Gd

64

88

151.9197910(27)

1.08(8)×1014 y

α

148Sm

0+

0.0020(1)

153Gd

64

89

152.9217495(27)

240.4(10) d

EC

153Eu

3/2−

153m1Gd

95.1737(12) keV

3.5(4) µs

(9/2+)

153m2Gd

171.189(5) keV

76.0(14) µs

(11/2−)

154Gd

64

90

153.9208656(27)

Observationally Stable

0+

0.0218(3)

155Gd

64

91

154.9226220(27)

Observationally Stable

3/2−

0.1480(12)

155mGd

121.05(19) keV

31.97(27) ms

IT

155Gd

11/2−

156Gd

64

92

155.9221227(27)

Stable

0+

0.2047(9)

156mGd

2137.60(5) keV

1.3(1) µs

7-

157Gd

64

93

156.9239601(27)

Stable

3/2−

0.1565(2)

158Gd

64

94

157.9241039(27)

Stable

0+

0.2484(7)

159Gd

64

95

158.9263887(27)

18.479(4) h

β−

159Tb

3/2−

160Gd

64

96

159.9270541(27)

Observationally Stable

0+

0.2186(19)

161Gd

64

97

160.9296692(29)

3.646(3) min

β−

161Tb

5/2−

162Gd

64

98

161.930985(5)

8.4(2) min

β−

162Tb

0+

163Gd

64

99

162.93399(32)

68(3) s

β−

163Tb

7/2+

164Gd

64

100

163.93586(43)

45(3) s

β−

164Tb

0+

165Gd

64

101

164.93938(54)

10.3(16) s

β−

165Tb

1/2−

166Gd

64

102

165.94160(64)

4.8(10) s

β−

166Tb

0+

167Gd

64

103

166.94557(64)

3 s

β−

167Tb

5/2−

168Gd

64

104

167.94836(75)

300 ms

β−

168Tb

0+

169Gd

64

105

168.95287(86)

1 s

β−

169Tb

7/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

135Tb

65

70

0.94(+33−22) ms

(7/2−)

136Tb

65

71

135.96138(64)

0.2 s

137Tb

65

72

136.95598(64)

600 ms

11/2−

138Tb

65

73

137.95316(43)

800 ms [>200 ns]

β+

138Gd

p

137Gd

139Tb

65

74

138.94829(32)

1.6(2) s

β+

139Gd

11/2−

140Tb

65

75

139.94581(86)

2.4(2) s

β+ (99.74%)

140Gd

5

β+, p (.26%)

139Eu

141Tb

65

76

140.94145(11)

3.5(2) s

β+

141Gd

(5/2−)

141mTb

0(200) keV

7.9(6) s

β+

141Gd

11/2−

142Tb

65

77

141.93874(32)

597(17) ms

β+

142Gd

1+

β+, p

141Eu

142m1Tb

280.2(10) keV

303(17) ms

IT (99.5%)

142Tb

(5−)

β+ (.5%)

142Gd

142m2Tb

621.4(11) keV

15(4) µs

143Tb

65

78

142.93512(6)

12(1) s

β+

143Gd

(11/2−)

143mTb

0(100) keV

<21 s

β+

143Gd

5/2+

144Tb

65

79

143.93305(3)

~1 s

β+

144Gd

1+

β+, p (rare)

143Eu

144m1Tb

396.9(5) keV

4.25(15) s

IT (66%)

144Tb

(6−)

β+ (34%)

144Gd

β+, p (<1%)

143Eu

144m2Tb

476.2(5) keV

2.8(3) µs

(8−)

144m3Tb

517.1(5) keV

670(60) ns

(9+)

144m4Tb

544.5(6) keV

<300 ns

(10+)

145Tb

65

80

144.92927(6)

20 min

β+

145Gd

(3/2+)

145mTb

0(100) keV

30.9(7) s

β+

145Gd

(11/2−)

146Tb

65

81

145.92725(5)

8(4) s

β+

146Gd

1+

146m1Tb

150(100) keV

24.1(5) s

β+

146Gd

5−

146m2Tb

930(100) keV

1.18(2) ms

(10+)

147Tb

65

82

146.924045(13)

1.64(3) h

β+

147Gd

1/2+

147mTb

50.6(9) keV

1.87(5) min

β+

147Gd

(11/2)−

148Tb

65

83

147.924272(15)

60(1) min

β+

148Gd

2−

148m1Tb

90.1(3) keV

2.20(5) min

β+

148Gd

(9)+

148m2Tb

8618.6(10) keV

1.310(7) µs

(27+)

149Tb

65

84

148.923246(5)

4.118(25) h

β+ (83.3%)

149Gd

1/2+

α (16.7%)

145Eu

149mTb

35.78(13) keV

4.16(4) min

β+ (99.97%)

149Gd

11/2−

α (.022%)

145Eu

150Tb

65

85

149.923660(8)

3.48(16) h

β+ (99.95%)

150Gd

(2−)

α (.05%)

146Eu

150mTb

457(29) keV

5.8(2) min

β+

150Gd

9+

IT (rare)

150Tb

151Tb

65

86

150.923103(5)

17.609(1) h

β+ (99.99%)

151Gd

1/2(+)

α (.0095%)

147Eu

151mTb

99.54(6) keV

25(3) s

IT (93.8%)

151Tb

(11/2−)

β+ (6.2%)

151Gd

152Tb

65

87

151.92407(4)

17.5(1) h

β+

152Gd

2−

α (7×10−7%)

148Eu

152m1Tb

342.15(16) keV

0.96 µs

5−

152m2Tb

501.74(19) keV

4.2(1) min

IT (78.8%)

152Tb

8+

β+ (21.2%)

152Gd

153Tb

65

88

152.923435(5)

2.34(1) d

β+

153Gd

5/2+

153mTb

163.175(5) keV

186(4) µs

11/2−

154Tb

65

89

153.92468(5)

21.5(4) h

β+ (99.9%)

154Gd

0(+)

β− (.1%)

154Dy

154m1Tb

12(7) keV

9.4(4) h

β+ (78.2%)

154Gd

3−

IT (21.8%)

154Tb

β− (.1%)

154Dy

154m2Tb

200(150) keV

22.7(5) h

7−

154m3Tb

0+Z keV

513(42) ns

155Tb

65

90

154.923505(13)

5.32(6) d

EC

155Gd

3/2+

156Tb

65

91

155.924747(5)

5.35(10) d

β+

156Gd

3−

β− (rare)

156Dy

156m1Tb

54(3) keV

24.4(10) h

IT

156Tb

(7−)

156m2Tb

88.4(2) keV

5.3(2) h

(0+)

157Tb

65

92

156.9240246(27)

71(7) y

EC

157Gd

3/2+

158Tb

65

93

157.9254131(28)

180(11) y

β+ (83.4%)

158Gd

3−

β− (16.6%)

158Dy

158m1Tb

110.3(12) keV

10.70(17) s

IT (99.39%)

158Tb

0−

β− (.6%)

158Dy

β+ (.01%)

158Gd

158m2Tb

388.37(15) keV

0.40(4) ms

7−

159Tb

65

94

158.9253468(27)

Stable

3/2+

1.0000

160Tb

65

95

159.9271676(27)

72.3(2) d

β−

160Dy

3−

161Tb

65

96

160.9275699(28)

6.906(19) d

β−

161Dy

3/2+

162Tb

65

97

161.92949(4)

7.60(15) min

β−

162Dy

1−

163Tb

65

98

162.930648(5)

19.5(3) min

β−

163Dy

3/2+

164Tb

65

99

163.93335(11)

3.0(1) min

β−

164Dy

(5+)

165Tb

65

100

164.93488(21)

2.11(10) min

β−

165mDy

3/2+

166Tb

65

101

165.93799(11)

25.6(22) s

β−

166Dy

167Tb

65

102

166.94005(43)

19.4(27) s

β−

167Dy

3/2+

168Tb

65

103

167.94364(54)

8.2(13) s

β−

168Dy

4−

169Tb

65

104

168.94622(64)

2 s

β−

169Dy

3/2+

170Tb

65

105

169.95025(75)

3 s

β−

170Dy

171Tb

65

106

170.95330(86)

500 ms

β−

171Dy

3/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

138Dy

66

72

137.96249(64)

200 ms

0+

139Dy

66

73

138.95954(54)

600(200) ms

7/2+

140Dy

66

74

139.95401(54)

700 ms

β+

140Tb

0+

140mDy

2166.1(5) keV

7.0(5) µs

(8−)

141Dy

66

75

140.95135(32)

0.9(2) s

β+

141Tb

(9/2−)

β+, p (rare)

140Gd

142Dy

66

76

141.94637(39)

2.3(3) s

β+ (99.94%)

142Tb

0+

β+, p (.06%)

141Gd

143Dy

66

77

142.94383(21)

5.6(10) s

β+

143Tb

(1/2+)

β+, p (rare)

142Gd

143mDy

310.7(6) keV

3.0(3) s

(11/2−)

144Dy

66

78

143.93925(3)

9.1(4) s

β+

144Tb

0+

β+, p (rare)

143Gd

145Dy

66

79

144.93743(5)

9.5(10) s

β+

145Tb

(1/2+)

β+, p (rare)

144Gd

145mDy

118.2(2) keV

14.1(7) s

β+

145Tb

(11/2−)

146Dy

66

80

145.932845(29)

33.2(7) s

β+

146Tb

0+

146mDy

2935.7(6) keV

150(20) ms

IT

146Dy

(10+)

147Dy

66

81

146.931092(21)

40(10) s

β+ (99.95%)

147Tb

1/2+

β+, p (.05%)

146Tb

147m1Dy

750.5(4) keV

55(1) s

β+ (65%)

147Tb

11/2−

IT (35%)

147Dy

147m2Dy

3407.2(8) keV

0.40(1) µs

(27/2−)

148Dy

66

82

147.927150(11)

3.3(2) min

β+

148Tb

0+

149Dy

66

83

148.927305(9)

4.20(14) min

β+

149Tb

7/2(−)

149mDy

2661.1(4) keV

490(15) ms

IT (99.3%)

149Dy

(27/2−)

β+ (.7%)

149Tb

150Dy

66

84

149.925585(5)

7.17(5) min

β+ (64%)

150Tb

0+

α (36%)

146Gd

151Dy

66

85

150.926185(4)

17.9(3) min

β+ (94.4%)

151Tb

7/2(−)

α (5.6%)

147Gd

152Dy

66

86

151.924718(6)

2.38(2) h

EC (99.9%)

152Tb

0+

α (.1%)

148Gd

153Dy

66

87

152.925765(5)

6.4(1) h

β+ (99.99%)

153Tb

7/2(−)

α (.00939%)

149Gd

154Dy

66

88

153.924424(8)

3.0(15)×106 y

α

150Gd

0+

β+β+ (rare)

154Gd

155Dy

66

89

154.925754(13)

9.9(2) h

β+

155Tb

3/2−

155mDy

234.33(3) keV

6(1) µs

11/2−

156Dy

66

90

155.924283(7)

Observationally Stable

0+

5.6(3)×10−4

157Dy

66

91

156.925466(7)

8.14(4) h

β+

157Tb

3/2−

157m1Dy

161.99(3) keV

1.3(2) µs

9/2+

157m2Dy

199.38(7) keV

21.6(16) ms

IT

157Dy

11/2−

158Dy

66

92

157.924409(4)

Observationally Stable

0+

9.5(3)×10−4

159Dy

66

93

158.9257392(29)

144.4(2) d

EC

159Tb

3/2−

159mDy

352.77(14) keV

122(3) µs

11/2−

160Dy

66

94

159.9251975(27)

Observationally Stable

0+

0.02329(18)

161Dy

66

95

160.9269334(27)

Observationally Stable

5/2+

0.18889(42)

162Dy

66

96

161.9267984(27)

Observationally Stable

0+

0.25475(36)

163Dy

66

97

162.9287312(27)

Stable

5/2−

0.24896(42)

164Dy

66

98

163.9291748(27)

Stable

0+

0.28260(54)

165Dy

66

99

164.9317033(27)

2.334(1) h

β−

165Ho

7/2+

165mDy

108.160(3) keV

1.257(6) min

IT (97.76%)

165Dy

1/2−

β− (2.24%)

165Ho

166Dy

66

100

165.9328067(28)

81.6(1) h

β−

166Ho

0+

167Dy

66

101

166.93566(6)

6.20(8) min

β−

167Ho

(1/2−)

168Dy

66

102

167.93713(15)

8.7(3) min

β−

168Ho

0+

169Dy

66

103

168.94031(32)

39(8) s

β−

169Ho

(5/2−)

170Dy

66

104

169.94239(21)

30 s

β−

170Ho

0+

171Dy

66

105

170.94620(32)

6 s

β−

171Ho

7/2−

172Dy

66

106

171.94876(43)

3 s

β−

172Ho

0+

173Dy

66

107

172.95300(54)

2 s

β−

173Ho

9/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

140Ho

67

73

139.96854(54)

6(3) ms

8+

141Ho

67

74

140.96310(54)

4.1(3) ms

(7/2−)

141mHo

66(2) keV

6.4(8) µs

(1/2+)

142Ho

67

75

141.95977(54)

400(100) ms

β+

142Dy

(6 to 9)

p

141Dy

143Ho

67

76

142.95461(43)

300 ms
[>200 ns]

β+

143Dy

11/2−

144Ho

67

77

143.95148(32)

0.7(1) s

β+

144Dy

β+, p

143Tb

145Ho

67

78

144.94720(32)

2.4(1) s

β+

145Dy

(11/2−)

145mHo

100(100) keV

100 ms

5/2+

146Ho

67

79

145.94464(21)

3.6(3) s

β+

146Dy

(10+)

β+, p (rare)

145Tb

147Ho

67

80

146.94006(3)

5.8(4) s

β+

147Dy

(11/2−)

β+, p (rare)

146Tb

148Ho

67

81

147.93772(14)

2.2(11) s

β+

148Dy

(1+)

148m1Ho

400(100) keV

9.49(12) s

β+ (99.92%)

148Dy

(6)−

β+, p (.08%)

147Tb

148m2Ho

690(100) keV

2.35(4) ms

(10+)

149Ho

67

82

148.933775(20)

21.1(2) s

β+

149Dy

(11/2−)

149m1Ho

48.80(20) keV

56(3) s

β+

149Dy

(1/2+)

149m2Ho

7200(350) keV

>=100 ns

150Ho

67

83

149.933496(15)

76.8(18) s

β+

150Dy

2−

150m1Ho

-10(50) keV

23.3(3) s

β+

150Dy

(9)+

150m2Ho

~8000 keV

751 ns

151Ho

67

84

150.931688(13)

35.2(1) s

β+ (78%)

151Dy

11/2(−)

α (22%)

147Tb

151mHo

41.0(2) keV

47.2(10) s

α (77%)

147Tb

1/2(+)

β+ (22%)

151Dy

152Ho

67

85

151.931714(15)

161.8(3) s

β+ (88%)

152Dy

2−

α (12%)

148Tb

152m1Ho

160(1) keV

50.0(4) s

9+

152m2Ho

3019.59(19) keV

8.4(3) µs

19−

153Ho

67

86

152.930199(6)

2.01(3) min

β+ (99.94%)

153Dy

11/2−

α (.05%)

149Tb

153m1Ho

68.7(3) keV

9.3(5) min

β+ (99.82%)

153Dy

1/2+

α (.18%)

149Tb

153m2Ho

2772 keV

229(2) ns

(31/2+)

154Ho

67

87

153.930602(9)

11.76(19) min

β+ (99.98%)

154Dy

2−

α (.02%)

150Tb

154mHo

238(30) keV

3.10(14) min

β+ (99.99%)

154Dy

8+

α (.001%)

150Tb

IT (rare)

154Ho

155Ho

67

88

154.929103(19)

48(1) min

β+

155Dy

5/2+

155mHo

141.97(11) keV

880(80) µs

11/2−

156Ho

67

89

155.92984(5)

56(1) min

β+

156Dy

4−

156m1Ho

100(50) keV

7.8(3) min

β+

156Dy

(9+)

IT

156Ho

156m2Ho

52.4(5) keV

9.5(15) s

1−

157Ho

67

90

156.928256(26)

12.6(2) min

β+

157Dy

7/2−

158Ho

67

91

157.928941(29)

11.3(4) min

β+ (93%)

158Dy

5+

α (7%)

154Tb

158m1Ho

67.200(10) keV

28(2) min

IT (81%)

158Ho

2−

β+ (19%)

158Dy

158m2Ho

180(70) keV

21.3(23) min

(9+)

159Ho

67

92

158.927712(4)

33.05(11) min

β+

159Dy

7/2−

159mHo

205.91(5) keV

8.30(8) s

IT

159Ho

1/2+

160Ho

67

93

159.928729(16)

25.6(3) min

β+

160Dy

5+

160m1Ho

59.98(3) keV

5.02(5) h

IT (65%)

160Ho

2−

β+ (35%)

160Dy

160m2Ho

197(16) keV

3 s

(9+)

161Ho

67

94

160.927855(3)

2.48(5) h

EC

161Dy

7/2−

161mHo

211.16(3) keV

6.76(7) s

IT

161Ho

1/2+

162Ho

67

95

161.929096(4)

15.0(10) min

β+

162Dy

1+

162mHo

106(7) keV

67.0(7) min

IT (62%)

162Ho

6−

β+ (38%)

162Dy

163Ho

67

96

162.9287339(27)

4570(25) y

EC

163Dy

7/2−

163mHo

297.88(7) keV

1.09(3) s

IT

163Ho

1/2+

164Ho

67

97

163.9302335(30)

29(1) min

EC (60%)

164Dy

1+

β− (40%)

164Er

164mHo

139.77(8) keV

38.0(10) min
[37.5(+15−5) min]

IT

164Ho

6−

165Ho

67

98

164.9303221(27)

Observationally Stable

7/2−

1.0000

166Ho

67

99

165.9322842(27)

26.83(2) h

β−

166Er

0−

166m1Ho

5.985(18) keV

1,200(180) y

β−

166Er

(7)−

166m2Ho

190.9052(20) keV

185(15) µs

3+

167Ho

67

100

166.933133(6)

3.003(18) h

β−

167Er

7/2−

167mHo

259.34(11) keV

6.0(10) µs

3/2+

168Ho

67

101

167.93552(3)

2.99(7) min

β−

168Er

3+

168m1Ho

59(1) keV

132(4) s

IT (99.5%)

168Ho

(6+)

β− (.5%)

168Er

168m2Ho

143.4(2) keV

>4 µs

(1)−

168m3Ho

192.6(2) keV

108(11) ns

1+

169Ho

67

102

168.936872(22)

4.72(10) min

β−

169Er

7/2−

170Ho

67

103

169.93962(5)

2.76(5) min

β−

170Er

6+

170mHo

120(70) keV

43(2) s

β−

170Er

(1+)

171Ho

67

104

170.94147(64)

53(2) s

β−

171Er

7/2−

172Ho

67

105

171.94482(43)

25(3) s

β−

172Er

173Ho

67

106

172.94729(43)

10 s

β−

173Er

7/2−

174Ho

67

107

173.95115(54)

8 s

175Ho

67

108

174.95405(64)

5 s

7/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

142Er

68

74

141.97231(47)

0+

143Er

68

75

142.96634(64)

200 ms

9/2−

144Er

68

76

143.96038(43)

400 ms [>200 ns]

β+

144Ho

0+

145Er

68

77

144.95739(43)

900(300) ms

β+

145Ho

1/2+

β+, p (rare)

144Dy

146Er

68

78

145.95200(32)

1.7(6) s

β+

146Ho

0+

β+, p

145Dy

147Er

68

79

146.94949(32)

~2.5 s

β+

147Ho

(1/2+)

β+, p

146Dy

147mEr

100(50) keV

2.5(2) s

β+

147Ho

(11/2−)

148Er

68

80

147.94455(21)

4.6(2) s

β+ (99.85%)

148Ho

0+

β+, p (.15%)

147Dy

149Er

68

81

148.94231(3)

4(2) s

β+ (93%)

149Ho

(1/2+)

β+, p (7%)

148Dy

149m1Er

741.8(2) keV

8.9(2) s

β+ (96.5%)

149Ho

(11/2−)

IT (3.5%)

149Er

β+, p (.18%)

148Dy

149m2Er

2611.1(3) keV

0.61(8) µs

(19/2+)

149m3Er

3242.7+X keV

4.8(1) µs

(27/2−)

150Er

68

82

149.937914(18)

18.5(7) s

β+

150Ho

0+

151Er

68

83

150.937449(18)

23.5(13) s

β+

151Ho

(7/2−)

151m1Er

2585.5(6) keV

580(20) ms

IT (95.3%)

151Er

(27/2−)

β+ (4.7%)

151Ho

151m2Er

10286+X keV

0.42(5) µs

(67/2,69/2,71/2)

152Er

68

84

151.935050(11)

10.3(1) s

α (90%)

148Dy

0+

β+ (10%)

152Ho

153Er

68

85

152.935063(9)

37.1(2) s

α (53%)

149Dy

7/2(−)

β+ (47%)

153Ho

154Er

68

86

153.932783(6)

3.73(9) min

β+ (99.53%)

154Ho

0+

α (.47%)

150Dy

155Er

68

87

154.933209(7)

5.3(3) min

β+ (99.98%)

155Ho

7/2−

α (.022%)

151Dy

156Er

68

88

155.931065(26)

19.5(10) min

β+

156Ho

0+

157Er

68

89

156.93192(3)

18.65(10) min

β+

157Ho

3/2−

157mEr

155.4(3) keV

76(6) ms

IT

157Er

(9/2+)

158Er

68

90

157.929893(27)

2.29(6) h

EC

158Ho

0+

159Er

68

91

158.930684(5)

36(1) min

β+

159Ho

3/2−

159m1Er

182.602(24) keV

337(14) ns

9/2+

159m2Er

429.05(3) keV

590(60) ns

11/2−

160Er

68

92

159.929083(26)

28.58(9) h

EC

160Ho

0+

161Er

68

93

160.929995(10)

3.21(3) h

β+

161Ho

3/2−

161mEr

396.44(4) keV

7.5(7) µs

11/2−

162Er

68

94

161.928778(4)

Observationally Stable

0+

0.00139(5)

163Er

68

95

162.930033(6)

75.0(4) min

β+

163Ho

5/2−

163mEr

445.5(6) keV

580(100) ns

(11/2−)

164Er

68

96

163.929200(3)

Observationally Stable

0+

0.01601(3)

165Er

68

97

164.930726(3)

10.36(4) h

EC

165Ho

5/2−

166Er

68

98

165.9302931(27)

Observationally Stable

0+

0.33503(36)

167Er

68

99

166.9320482(27)

Observationally Stable

7/2+

0.22869(9)

167mEr

207.801(5) keV

2.269(6) s

IT

167Er

1/2−

168Er

68

100

167.9323702(27)

Observationally Stable

0+

0.26978(18)

169Er

68

101

168.9345904(27)

9.392(18) d

β−

169Tm

1/2−

170Er

68

102

169.9354643(30)

Observationally Stable

0+

0.14910(36)

171Er

68

103

170.9380298(30)

7.516(2) h

β−

171Tm

5/2−

171mEr

198.6(1) keV

210(10) ns

1/2−

172Er

68

104

171.939356(5)

49.3(3) h

β−

172Tm

0+

173Er

68

105

172.94240(21)

1.434(17) min

β−

173Tm

(7/2−)

174Er

68

106

173.94423(32)

3.2(2) min

β−

174Tm

0+

175Er

68

107

174.94777(43)

1.2(3) min

β−

175Tm

(9/2+)

176Er

68

108

175.95008(43)

20 s

β−

176Tm

0+

177Er

68

109

176.95405(54)

3 s

β−

177Tm

1/2−

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

145Tm

69

76

144.97007(43)

3.1(3) µs

(11/2−)

146Tm

69

77

145.96643(43)

240(30) ms

p

145Er

(6−)

β+ (rare)

146Er

146mTm

71(6) keV

72(23) ms

p

145Er

(10+)

β+ (rare)

146Er

147Tm

69

78

146.96096(32)

0.58(3) s

β+ (85%)

147Er

11/2−

p (15%)

146Er

147mTm

60(5) keV

360(40) µs

3/2+

148Tm

69

79

147.95784(43)

0.7(2) s

β+

148Er

(10+)

148mTm

0.7 s

149Tm

69

80

148.95272(32)

0.9(2) s

β+ (99.74%)

149Er

(11/2−)

β+, p (.26%)

148Ho

150Tm

69

81

149.94996(21)

3 s

β+

150Er

(1+)

150m1Tm

140(140) keV

2.20(6) s

β+ (98.8%)

150Er

(6−)

β+, p (1.2%)

149Ho

150m2Tm

810(140) keV

5.2(3) ms

(10+)

151Tm

69

82

150.945483(22)

4.17(10) s

β+

151Er

(11/2−)

151m1Tm

92(7) keV

6.6(14) s

β+

151Er

(1/2+)

151m2Tm

2655.67(22) keV

451(24) ns

(27/2−)

152Tm

69

83

151.94442(8)

8.0(10) s

β+

152Er

(2)−

152m1Tm

100(80) keV

5.2(6) s

β+

152Er

(9)+

152m2Tm

2555.05(19)+X keV

294(12) ns

(17+)

153Tm

69

84

152.942012(20)

1.48(1) s

α (91%)

149Ho

(11/2−)

β+ (9%)

153Er

153mTm

43.2(2) keV

2.5(2) s

α (92%)

149Ho

(1/2+)

β+ (8%)

153Er

154Tm

69

85

153.941568(15)

8.1(3) s

β+ (56%)

154Er

(2−)

α (44%)

150Ho

154mTm

70(50) keV

3.30(7) s

α (90%)

150Ho

(9+)

β+ (10%)

154Er

155Tm

69

86

154.939199(14)

21.6(2) s

β+ (98.1%)

155Er

(11/2−)

α (1.9%)

151Ho

155mTm

41(6) keV

45(3) s

β+ (92%)

155Er

(1/2+)

α (8%)

151Ho

156Tm

69

87

155.938980(17)

83.8(18) s

β+ (99.93%)

156Er

2−

α (.064%)

152Er

156mTm

203.6(5) keV

~400 ns

(11−)

157Tm

69

88

156.93697(3)

3.63(9) min

β+

157Er

1/2+

158Tm

69

89

157.936980(27)

3.98(6) min

β+

158Er

2−

158mTm

50(100) keV

~20 ns

(5+)

159Tm

69

90

158.93498(3)

9.13(16) min

β+

159Er

5/2+

160Tm

69

91

159.93526(4)

9.4(3) min

β+

160Er

1−

160m1Tm

70(20) keV

74.5(15) s

IT (85%)

160Tm

5(+)

β+ (15%)

160Er

160m2Tm

98.2+X keV

~200 ns

(8)

161Tm

69

92

160.93355(3)

30.2(8) min

β+

161Er

7/2+

161m1Tm

7.4(2) keV

5 min

1/2+

161m2Tm

78.20(3) keV

110(3) ns

7/2−

162Tm

69

93

161.933995(28)

21.70(19) min

β+

162Er

1−

162mTm

130(40) keV

24.3(17) s

IT (82%)

162Tm

5+

β+ (18%)

162Er

163Tm

69

94

162.932651(6)

1.810(5) h

β+

163Er

1/2+

164Tm

69

95

163.93356(3)

2.0(1) min

β+

164Er

1+

164mTm

10(6) keV

5.1(1) min

IT (80%)

164Tm

6−

β+ (20%)

164Er

165Tm

69

96

164.932435(4)

30.06(3) h

β+

165Er

1/2+

166Tm

69

97

165.933554(13)

7.70(3) h

β+

166Er

2+

166mTm

122(8) keV

340(25) ms

IT

166Tm

6−

167Tm

69

98

166.9328516(29)

9.25(2) d

EC

167Er

1/2+

167m1Tm

179.480(19) keV

1.16(6) µs

(7/2)+

167m2Tm

292.820(20) keV

0.9(1) µs

7/2−

168Tm

69

99

167.934173(3)

93.1(2) d

β+ (99.99%)

168Er

3+

β− (.01%)

168Yb

169Tm

69

100

168.9342133(27)

Observationally Stable

1/2+

1.0000

170Tm

69

101

169.9358014(27)

128.6(3) d

β− (99.86%)

170Yb

1−

EC (.14%)

170Er

170mTm

183.197(4) keV

4.12(13) µs

(3)+

171Tm

69

102

170.9364294(28)

1.92(1) y

β−

171Yb

1/2+

171mTm

424.9560(15) keV

2.60(2) µs

7/2−

172Tm

69

103

171.938400(6)

63.6(2) h

β−

172Yb

2−

173Tm

69

104

172.939604(5)

8.24(8) h

β−

173Yb

(1/2+)

173mTm

317.73(20) keV

10(3) µs

(7/2−)

174Tm

69

105

173.94217(5)

5.4(1) min

β−

174Yb

(4)−

175Tm

69

106

174.94384(5)

15.2(5) min

β−

175Yb

(1/2+)

176Tm

69

107

175.94699(11)

1.85(3) min

β−

176Yb

(4+)

177Tm

69

108

176.94904(32)

90(6) s

β−

177Yb

(7/2−)

178Tm

69

109

177.95264(43)

30 s

β−

178Yb

179Tm

69

110

178.95534(54)

20 s

β−

179Yb

1/2+

 

 

Nuclide
symbol

Z(p)

N(n)

Isotopic mass (u)

Half-life

Decay
mode(s)

Daughter Isotope(s)

Nuclear
spin and
parity

Representative
isotopic
composition
(mole fraction)

Range of natural
variation
(mole fraction)

Excitation energy

148Yb

70

78

147.96742(64)

250 ms

β+

148Tm

0+

149Yb

70

79

148.96404(54)

0.7(2) s

β+

149Tm

(1/2+,3/2+)

150Yb

70

80

149.95842(43)

700 ms [>200 ns]

β+

150Tm

0+

151Yb

70

81

150.95540(32)

1.6(5) s

β+

151Tm

(1/2+)

β+, p (rare)

150Er

151m1Yb

750(100) keV

1.6(5) s

β+

151Tm

(11/2−)

β+, p (rare)

150Er

151m2Yb

1790(500) keV

2.6(7) µs

19/2−

151m3Yb

2450(500) keV

20(1) µs

27/2−

152Yb

70

82

151.95029(22)

3.04(6) s

β+

152Tm

0+

β+, p (rare)

151Er

153Yb

70

83

152.94948(21)

4.2(2) s

α (50%)

149Er

7/2−

β+ (50%)

153Tm

β+, p (.008%)

152Er

153mYb

2700(100) keV

15(1) µs

(27/2−)

154Yb

70

84

153.946394(19)

0.409(2) s

α (92.8%)

150Er

0+

β+ (7.119%)

154Tm

155Yb

70

85

154.945782(18)

1.793(19) s

α (89%)

151Er

(7/2−)

β+ (11%)

155Tm

156Yb

70

86

155.942818(12)

26.1(7) s

β+ (90%)

156Tm

0+

α (10%)

152Er

157Yb

70

87

156.942628(11)

38.6(10) s

β+ (99.5%)

157Tm

7/2−

α (.5%)

153Er

158Yb

70

88

157.939866(9)

1.49(13) min

β+ (99.99%)

158Tm

0+

α (.0021%)

154Er

159Yb

70

89

158.94005(2)

1.67(9) min

β+

159Tm

5/2(−)

160Yb

70

90

159.937552(18)

4.8(2) min

β+

160Tm

0+

161Yb

70

91

160.937902(17)

4.2(2) min

β+

161Tm

3/2−

162Yb

70

92

161.935768(17)

18.87(19) min

β+

162Tm

0+

163Yb

70

93

162.936334(17)

11.05(25) min

β+

163Tm

3/2−

164Yb

70

94

163.934489(17)

75.8(17) min

EC

164Tm

0+

165Yb

70

95

164.93528(3)

9.9(3) min

β+

165Tm

5/2−

166Yb

70

96

165.933882(9)

56.7(1) h

EC

166Tm

0+

167Yb

70

97

166.934950(5)

17.5(2) min

β+

167Tm

5/2−

168Yb

70

98

167.933897(5)

Observationally Stable

0+

0.0013(1)

169Yb

70

99

168.935190(5)

32.026(5) d

EC

169Tm

7/2+

169mYb

24.199(3) keV

46(2) s

IT

169Yb

1/2−

170Yb

70

100

169.9347618(26)

Observationally Stable

0+

0.0304(15)

170mYb

1258.46(14) keV

370(15) ns

4−

171Yb

70

101

170.9363258(26)

Observationally Stable

1/2−

0.1428(57)

171m1Yb

95.282(2) keV

5.25(24) ms

IT

171Yb

7/2+

171m2Yb

122.416(2) keV

265(20) ns

5/2−

172Yb

70

102

171.9363815(26)

Observationally Stable

0+

0.2183(67)

173Yb

70

103

172.9382108(26)

Observationally Stable

5/2−

0.1613(27)

173mYb

398.9(5) keV

2.9(1) µs

1/2−

174Yb

70

104

173.9388621(26)

Observationally Stable

0+

0.3183(92)

175Yb

70

105

174.9412765(26)

4.185(1) d

β−

175Lu

7/2−

175mYb

514.865(4) keV

68.2(3) ms

1/2−

176Yb

70

106

175.9425717(28)

Observationally Stable

0+

0.1276(41)

176mYb

1050.0(3) keV

11.4(3) s

(8)−

177Yb

70

107

176.9452608(28)

1.911(3) h

β−

177Lu

(9/2+)

177mYb

331.5(3) keV

6.41(2) s

IT

177Yb

(1/2−)

178Yb

70

108

177.946647(11)

74(3) min

β−

178Lu

0+

179Yb

70

109

178.95017(32)

8.0(4) min

β−

179Lu

(1/2−)

180Yb

70

110

179.95233(43)

2.4(5) min

β−

180Lu

0+

181Yb

70

111

180.95615(43)

1 min

β−

181Lu

3/2−

182Yb

70

112

> 160 ns

β−

182Lu

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

excitation energy

150Lu

71

79

149.97323(54)

43(5) ms

p (80%)

149Yb

(2+)

β+ (20%)

150Yb

150mLu

34(15) keV

80(60) µs
[30(+95−15) µs]

p

149Yb

(1,2)

151Lu

71

80

150.96757682

80.6(5) ms

p (63.4%)

150Yb

(11/2−)

β+ (36.6%)

151Yb

151mLu

77(5) keV

16(1) µs

p

150Yb

(3/2+)

152Lu

71

81

151.96412(21)

650(70) ms

β+ (85%)

152Yb

(5−,6−)

β+, p (15%)

151Tm

153Lu

71

82

152.95877(22)

0.9(2) s

α (70%)

149Tm

11/2−

β+ (30%)

153Yb

153m1Lu

80(5) keV

1 s

IT

153Lu

1/2+

153m2Lu

2502.5(4) keV

>0.1 µs

IT

153Lu

23/2−

153m3Lu

2632.9(5) keV

15(3) µs

IT

153m2Lu

27/2−

154Lu

71

83

153.95752(22)

1 s

β+

154Yb

(2−)

154m1Lu

58(13) keV

1.12(8) s

(9+)

154m2Lu

>2562 keV

35(3) µs

(17+)

155Lu

71

84

154.954316(22)

68.6(16) ms

α (76%)

151Tm

(11/2−)

β+ (24%)

155Yb

155m1Lu

20(6) keV

138(8) ms

α (88%)

151Tm

(1/2+)

β+ (12%)

155Yb

155m2Lu

1781.0(20) keV

2.70(3) ms

(25/2−)

156Lu

71

85

155.95303(8)

494(12) ms

α (95%)

152Tm

(2)−

β+ (5%)

156Yb

156mLu

220(80) keV

198(2) ms

α (94%)

152Tm

(9)+

β+ (6%)

156Yb

157Lu

71

86

156.950098(20)

6.8(18) s

β+

157Yb

(1/2+,3/2+)

α

153Tm

157mLu

21.0(20) keV

4.79(12) s

β+ (94%)

157Yb

(11/2−)

α (6%)

153Tm

158Lu

71

87

157.949313(16)

10.6(3) s

β+ (99.09%)

158Yb

2−

α (.91%)

154Tm

159Lu

71

88

158.94663(4)

12.1(10) s

β+ (99.96%)

159Yb

1/2+

α (.04%)

155Tm

159mLu

100(80) keV

10 s

11/2−

160Lu

71

89

159.94603(6)

36.1(3) s

β+

160Yb

2−

α (10−4%)

156Tm

160mLu

0(100) keV

40(1) s

161Lu

71

90

160.94357(3)

77(2) s

β+

161Yb

1/2+

161mLu

166(18) keV

7.3(4) ms

IT

161Lu

(9/2−)

162Lu

71

91

161.94328(8)

1.37(2) min

β+

162Yb

(1−)

162m1Lu

120(200) keV

1.5 min

β+

162Yb

4−

IT (rare)

162Lu

162m2Lu

300(200) keV

1.9 min

163Lu

71

92

162.94118(3)

3.97(13) min

β+

163Yb

1/2(+)

164Lu

71

93

163.94134(3)

3.14(3) min

β+

164Yb

1(−)

165Lu

71

94

164.939407(28)

10.74(10) min

β+

165Yb

1/2+

166Lu

71

95

165.93986(3)

2.65(10) min

β+

166Yb

(6−)

166m1Lu

34.37(5) keV

1.41(10) min

EC (58%)

166Yb

3(−)

IT (42%)

166Lu

166m2Lu

42.9(5) keV

2.12(10) min

0(−)

167Lu

71

96

166.93827(3)

51.5(10) min

β+

167Yb

7/2+

167mLu

0(30) keV

>1 min

1/2(−)

168Lu

71

97

167.93874(5)

5.5(1) min

β+

168Yb

(6−)

168mLu

180(110) keV

6.7(4) min

β+ (95%)

168Yb

3+

IT (5%)

168Lu

169Lu

71

98

168.937651(6)

34.06(5) h

β+

169Yb

7/2+

169mLu

29.0(5) keV

160(10) s

IT

169Lu

1/2−

170Lu

71

99

169.938475(18)

2.012(20) d

β+

170Yb

0+

170mLu

92.91(9) keV

670(100) ms

IT

170Lu

(4)−

171Lu

71

100

170.9379131(30)

8.24(3) d

β+

171Yb

7/2+

171mLu

71.13(8) keV

79(2) s

IT

171Lu

1/2−

172Lu

71

101

171.939086(3)

6.70(3) d

β+

172Yb

4−

172m1Lu

41.86(4) keV

3.7(5) min

IT

172Lu

1−

172m2Lu

65.79(4) keV

0.332(20) µs

(1)+

172m3Lu

109.41(10) keV

440(12) µs

(1)+

172m4Lu

213.57(17) keV

150 ns

(6−)

173Lu

71

102

172.9389306(26)

1.37(1) y

EC

173Yb

7/2+

173mLu

123.672(13) keV

74.2(10) µs

5/2−

174Lu

71

103

173.9403375(26)

3.31(5) y

β+

174Yb

(1)−

174m1Lu

170.83(5) keV

142(2) d

IT (99.38%)

174Lu

6−

EC (.62%)

174Yb

174m2Lu

240.818(4) keV

395(15) ns

(3+)

174m3Lu

365.183(6) keV

145(3) ns

(4−)

175Lu

71

104

174.9407718(23)

Observationally Stable

7/2+

0.9741(2)

175m1Lu

1392.2(6) keV

984(30) µs

(19/2+)

175m2Lu

353.48(13) keV

1.49(7) µs

5/2−

176Lu

71

105

175.9426863(23)

38.5(7)×109 y

β−

176Hf

7−

0.0259(2)

176mLu

122.855(6) keV

3.664(19) h

β− (99.9%)

176Hf

1−

EC (.095%)

176Yb

177Lu

71

106

176.9437581(23)

6.6475(20) d

β−

177Hf

7/2+

177m1Lu

150.3967(10) keV

130(3) ns

9/2−

177m2Lu

569.7068(16) keV

155(7) µs

1/2+

177m3Lu

970.1750(24) keV

160.44(6) d

β− (78.3%)

177Hf

23/2−

IT (21.7%)

177Lu

177m4Lu

3900(10) keV

7(2) min
[6(+3−2) min]

39/2−

178Lu

71

107

177.945955(3)

28.4(2) min

β−

178Hf

1(+)

178mLu

123.8(26) keV

23.1(3) min

β−

178Hf

9(−)

179Lu

71

108

178.947327(6)

4.59(6) h

β−

179Hf

7/2(+)

179mLu

592.4(4) keV

3.1(9) ms

IT

179Lu

1/2(+)

180Lu

71

109

179.94988(8)

5.7(1) min

β−

180Hf

5+

180m1Lu

13.9(3) keV

~1 s

IT

180Lu

3−

180m2Lu

624.0(5) keV

>=1 ms

(9−)

181Lu

71

110

180.95197(32)

3.5(3) min

β−

181Hf

(7/2+)

182Lu

71

111

181.95504(21)

2.0(2) min

β−

182Hf

(0,1,2)

183Lu

71

112

182.95757(32)

58(4) s

β−

183Hf

(7/2+)

184Lu

71

113

183.96091(43)

20(3) s

β−

184Hf

(3+)

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

153Hf

72

81

152.97069(54)

400 ms [>200 ns]

1/2+

153mHf

750(100) keV

500 ms

11/2−

154Hf

72

82

153.96486(54)

2(1) s

β+

154Lu

0+

α (rare)

150Yb

155Hf

72

83

154.96339(43)

890(120) ms

β+

155Lu

7/2−

α (rare)

151Yb

156Hf

72

84

155.95936(22)

23(1) ms

α (97%)

152Yb

0+

β+ (3%)

156Lu

156mHf

1959.0(10) keV

480(40) µs

8+

157Hf

72

85

156.95840(21)

115(1) ms

α (86%)

153Yb

7/2−

β+ (14%)

157Lu

158Hf

72

86

157.954799(19)

2.84(7) s

β+ (55%)

158Lu

0+

α (45%)

154Yb

159Hf

72

87

158.953995(18)

5.20(10) s

β+ (59%)

159Lu

7/2−

α (41%)

155Yb

160Hf

72

88

159.950684(12)

13.6(2) s

β+ (99.3%)

160Lu

0+

α (.7%)

156Yb

161Hf

72

89

160.950275(24)

18.2(5) s

β+ (99.7%)

161Lu

3/2−

α (.3%)

157Yb

162Hf

72

90

161.94721(1)

39.4(9) s

β+ (99.99%)

162Lu

0+

α (.008%)

158Yb

163Hf

72

91

162.94709(3)

40.0(6) s

β+

163Lu

3/2−

α (10−4%)

159Yb

164Hf

72

92

163.944367(22)

111(8) s

β+

164Lu

0+

165Hf

72

93

164.94457(3)

76(4) s

β+

165Lu

(5/2−)

166Hf

72

94

165.94218(3)

6.77(30) min

β+

166Lu

0+

167Hf

72

95

166.94260(3)

2.05(5) min

β+

167Lu

(5/2)−

168Hf

72

96

167.94057(3)

25.95(20) min

β+

168Lu

0+

169Hf

72

97

168.94126(3)

3.24(4) min

β+

169Lu

(5/2)−

170Hf

72

98

169.93961(3)

16.01(13) h

EC

170Lu

0+

171Hf

72

99

170.94049(3)

12.1(4) h

β+

171Lu

7/2(+)

171mHf

21.93(9) keV

29.5(9) s

IT

171Hf

1/2(−)

172Hf

72

100

171.939448(26)

1.87(3) y

EC

172Lu

0+

172mHf

2005.58(11) keV

163(3) ns

(8−)

173Hf

72

101

172.94051(3)

23.6(1) h

β+

173Lu

1/2−

174Hf

72

102

173.940046(3)

2.0(4)×1015 y

α

170Yb

0+

0.0016(1)

0.001619–0.001621

174m1Hf

1549.3 keV

138(4) ns

(6+)

174m2Hf

1797.5(20) keV

2.39(4) µs

(8−)

174m3Hf

3311.7 keV

3.7(2) µs

(14+)

175Hf

72

103

174.941509(3)

70(2) d

β+

175Lu

5/2−

176Hf

72

104

175.9414086(24)

Observationally Stable

0+

0.0526(7)

0.05206–0.05271

177Hf

72

105

176.9432207(23)

Observationally Stable

7/2−

0.1860(9)

0.18593–0.18606

177m1Hf

1315.4504(8) keV

1.09(5) s

23/2+

177m2Hf

1342.38(20) keV

55.9(12) µs

(19/2−)

177m3Hf

2740.02(15) keV

51.4(5) min

37/2−

178Hf

72

106

177.9436988(23)

Observationally Stable

0+

0.2728(7)

0.27278–0.27297

178m1Hf

1147.423(5) keV

4.0(2) s

8−

178m2Hf

2445.69(11) keV

31(1) y

16+

178m3Hf

2573.5(5) keV

68(2) µs

(14−)

179Hf

72

107

178.9458161(23)

Observationally Stable

9/2+

0.1362(2)

0.13619–0.1363

179m1Hf

375.0367(25) keV

18.67(4) s

1/2−

179m2Hf

1105.84(19) keV

25.05(25) d

25/2−

180Hf

72

108

179.9465500(23)

Observationally Stable

0+

0.3508(16)

0.35076–0.351

180m1Hf

1141.48(4) keV

5.47(4) h

8−

180m2Hf

1374.15(4) keV

0.57(2) µs

(4−)

180m3Hf

2425.8(10) keV

15(5) µs

(10+)

180m4Hf

2486.3(9) keV

10(1) µs

12+

180m5Hf

2538.3(12) keV

>10 µs

(14+)

180m6Hf

3599.3(18) keV

90(10) µs

(18−)

181Hf

72

109

180.9491012(23)

42.39(6) d

β−

181Ta

1/2−

181m1Hf

595(3) keV

80(5) µs

(9/2+)

181m2Hf

1040(10) keV

~100 µs

(17/2+)

181m3Hf

1738(10) keV

1.5(5) ms

(27/2−)

182Hf

72

110

181.950554(7)

8.90(9)×106 y

β−

182Ta

0+

182mHf

1172.88(18) keV

61.5(15) min

β− (58%)

182Ta

8−

IT (42%)

182Hf

183Hf

72

111

182.95353(3)

1.067(17) h

β−

183Ta

(3/2−)

184Hf

72

112

183.95545(4)

4.12(5) h

β−

184Ta

0+

184mHf

1272.4(4) keV

48(10) s

β−

184Ta

8−

185Hf

72

113

184.95882(21)

3.5(6) min

β−

185Ta

3/2−

186Hf

72

114

185.96089(32)

2.6(12) min

β−

186Ta

0+

187Hf

72

115

186.96459(43)

30 s [>300 ns]

188Hf

72

116

187.96685(54)

20 s [>300 ns]

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

155Ta

73

82

154.97459(54)

13(4) µs
[12(+4−3) µs]

(11/2−)

156Ta

73

83

155.97230(43)

144(24) ms

β+ (95.8%)

156Hf

(2−)

p (4.2%)

155Hf

156mTa

102(7) keV

0.36(4) s

p

155Hf

9+

157Ta

73

84

156.96819(22)

10.1(4) ms

α (91%)

153Lu

1/2+

β+ (9%)

157Hf

157m1Ta

22(5) keV

4.3(1) ms

11/2−

157m2Ta

1593(9) keV

1.7(1) ms

α

153Lu

(25/2−)

158Ta

73

85

157.96670(22)

49(8) ms

α (96%)

154Lu

(2−)

β+ (4%)

158Hf

158mTa

141(9) keV

36.0(8) ms

α (93%)

154Lu

(9+)

IT

158Ta

β+

158Hf

159Ta

73

86

158.963018(22)

1.04(9) s

β+ (66%)

159Hf

(1/2+)

α (34%)

155Lu

159mTa

64(5) keV

514(9) ms

α (56%)

155Lu

(11/2−)

β+ (44%)

159Hf

160Ta

73

87

159.96149(10)

1.70(20) s

α

156Lu

(2)−

β+

160Hf

160mTa

310(90) keV

1.55(4) s

β+ (66%)

160Hf

(9)+

α (34%)

156Lu

161Ta

73

88

160.95842(6)

3 s

β+ (95%)

161Hf

1/2+

α (5%)

157Lu

161mTa

50(50) keV

2.89(12) s

11/2−

162Ta

73

89

161.95729(6)

3.57(12) s

β+ (99.92%)

162Hf

3+

α (.073%)

158Lu

163Ta

73

90

162.95433(4)

10.6(18) s

β+ (99.8%)

163Hf

1/2+

α (.2%)

159Lu

164Ta

73

91

163.95353(3)

14.2(3) s

β+

164Hf

(3+)

165Ta

73

92

164.950773(19)

31.0(15) s

β+

165Hf

5/2−

165mTa

60(30) keV

9/2−

166Ta

73

93

165.95051(3)

34.4(5) s

β+

166Hf

(2)+

167Ta

73

94

166.94809(3)

1.33(7) min

β+

167Hf

(3/2+)

168Ta

73

95

167.94805(3)

2.0(1) min

β+

168Hf

(2−,3+)

169Ta

73

96

168.94601(3)

4.9(4) min

β+

169Hf

(5/2+)

170Ta

73

97

169.94618(3)

6.76(6) min

β+

170Hf

(3)(+)

171Ta

73

98

170.94448(3)

23.3(3) min

β+

171Hf

(5/2−)

172Ta

73

99

171.94490(3)

36.8(3) min

β+

172Hf

(3+)

173Ta

73

100

172.94375(3)

3.14(13) h

β+

173Hf

5/2−

174Ta

73

101

173.94445(3)

1.14(8) h

β+

174Hf

3+

175Ta

73

102

174.94374(3)

10.5(2) h

β+

175Hf

7/2+

176Ta

73

103

175.94486(3)

8.09(5) h

β+

176Hf

(1)−

176m1Ta

103.0(10) keV

1.1(1) ms

IT

176Ta

(+)

176m2Ta

1372.6(11)+X keV

3.8(4) µs

(14−)

176m3Ta

2820(50) keV

0.97(7) ms

(20−)

177Ta

73

104

176.944472(4)

56.56(6) h

β+

177Hf

7/2+

177m1Ta

73.36(15) keV

410(7) ns

9/2−

177m2Ta

186.15(6) keV

3.62(10) µs

5/2−

177m3Ta

1355.01(19) keV

5.31(25) µs

21/2−

177m4Ta

4656.3(5) keV

133(4) µs

49/2−

178Ta

73

105

177.945778(16)

9.31(3) min

β+

178Hf

1+

178m1Ta

100(50) keV

2.36(8) h

β+

178Hf

(7)−

178m2Ta

1570(50) keV

59(3) ms

(15−)

178m3Ta

3000(50) keV

290(12) ms

(21−)

179Ta

73

106

178.9459295(23)

1.82(3) y

EC

179Hf

7/2+

179m1Ta

30.7(1) keV

1.42(8) µs

(9/2)−

179m2Ta

520.23(18) keV

335(45) ns

(1/2)+

179m3Ta

1252.61(23) keV

322(16) ns

(21/2−)

179m4Ta

1317.3(4) keV

9.0(2) ms

IT

179Ta

(25/2+)

179m5Ta

1327.9(4) keV

1.6(4) µs

(23/2−)

179m6Ta

2639.3(5) keV

54.1(17) ms

(37/2+)

180Ta

73

107

179.9474648(24)

8.152(6) h

EC (86%)

180Hf

1+

β− (14%)

180W

180m1Ta

77.1(8) keV

Observationally stable

9−

1.2(2)×10−4

180m2Ta

1452.40(18) keV

31.2(14) µs

15−

180m3Ta

3679.0(11) keV

2.0(5) µs

(22−)

180m4Ta

4171.0+X keV

17(5) µs

(23,24,25)

181Ta

73

108

180.9479958(20)

Observationally stable

7/2+

0.99988(2)

181m1Ta

6.238(20) keV

6.05(12) µs

9/2−

181m2Ta

615.21(3) keV

18(1) µs

1/2+

181m3Ta

1485(3) keV

25(2) µs

21/2−

181m4Ta

2230(3) keV

210(20) µs

29/2−

182Ta

73

109

181.9501518(19)

114.43(3) d

β−

182W

3−

182m1Ta

16.263(3) keV

283(3) ms

IT

182Ta

5+

182m2Ta

519.572(18) keV

15.84(10) min

10−

183Ta

73

110

182.9513726(19)

5.1(1) d

β−

183W

7/2+

183mTa

73.174(12) keV

107(11) ns

9/2−

184Ta

73

111

183.954008(28)

8.7(1) h

β−

184W

(5−)

185Ta

73

112

184.955559(15)

49.4(15) min

β−

185W

(7/2+)

185mTa

1308(29) keV

>1 ms

(21/2−)

186Ta

73

113

185.95855(6)

10.5(3) min

β−

186W

(2−,3−)

186mTa

1.54(5) min

187Ta

73

114

186.96053(21)

2 min
[>300 ns]

β−

187W

7/2+

188Ta

73

115

187.96370(21)

20 s
[>300 ns]

β−

188W

189Ta

73

116

188.96583(32)

3 s
[>300 ns]

7/2+

190Ta

73

117

189.96923(43)

0.3 s

 

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

158W

74

84

157.97456(54)

1.37(17) ms

α

154Hf

0+

158mW

1889(8) keV

143(19) µs

8+

159W

74

85

158.97292(43)

8.2(7) ms

α (82%)

155Hf

7/2−

β+ (18%)

159Ta

160W

74

86

159.96848(22)

90(5) ms

α (87%)

156Hf

0+

β+ (14%)

160Ta

161W

74

87

160.96736(21)

409(16) ms

α (73%)

157Hf

7/2−

β+ (23%)

161Ta

162W

74

88

161.963497(19)

1.36(7) s

β+ (53%)

162Ta

0+

α (47%)

158Hf

163W

74

89

162.96252(6)

2.8(2) s

β+ (59%)

163Ta

3/2−

α (41%)

159Hf

164W

74

90

163.958954(13)

6.3(2) s

β+ (97.4%)

164Ta

0+

α (2.6%)

160Hf

165W

74

91

164.958280(27)

5.1(5) s

β+ (99.8%)

165Ta

3/2−

α (.2%)

161Hf

166W

74

92

165.955027(11)

19.2(6) s

β+ (99.96%)

166Ta

0+

α (.035%)

162Hf

167W

74

93

166.954816(21)

19.9(5) s

β+ (>99.9%)

167Ta

3/2−

α (<.1%)

163Hf

168W

74

94

167.951808(17)

51(2) s

β+ (99.99%)

168Ta

0+

α (.0319%)

164Hf

169W

74

95

168.951779(17)

76(6) s

β+

169Ta

(5/2−)

170W

74

96

169.949228(16)

2.42(4) min

β+(99%)

170Ta

0+

α (1%)

166Hf

171W

74

97

170.94945(3)

2.38(4) min

β+

171Ta

(5/2−)

172W

74

98

171.94729(3)

6.6(9) min

β+

172Ta

0+

173W

74

99

172.94769(3)

7.6(2) min

β+

173Ta

5/2−

174W

74

100

173.94608(3)

33.2(21) min

β+

174Ta

0+

175W

74

101

174.94672(3)

35.2(6) min

β+

175Ta

(1/2−)

176W

74

102

175.94563(3)

2.5(1) h

EC

176Ta

0+

177W

74

103

176.94664(3)

132(2) min

β+

177Ta

1/2−

178W

74

104

177.945876(16)

21.6(3) d

EC

178Ta

0+

179W

74

105

178.947070(17)

37.05(16) min

β+

179Ta

(7/2)−

179m1W

221.926(8) keV

6.40(7) min

IT (99.72%)

179W

(1/2)−

β+ (.28%)

179Ta

179m2W

1631.90(8) keV

390(30) ns

(21/2+)

179m3W

3348.45(16) keV

750(80) ns

(35/2−)

180W

74

106

179.946704(4)

1.8(0.2)×1018 y

α

176Hf

0+

0.0012(1)

180m1W

1529.04(3) keV

5.47(9) ms

IT

180W

8−

180m2W

3264.56(21) keV

2.33(19) µs

14−

181W

74

107

180.948197(5)

121.2(2) d

EC

181Ta

9/2+

182W

74

108

181.9482042(9)

Observationally Stable

0+

0.2650(16)

183W

74

109

182.9502230(9)

Observationally Stable

1/2−

0.1431(4)

183mW

309.493(3) keV

5.2(3) s

IT

183W

11/2+

184W

74

110

183.9509312(9)

Observationally Stable

0+

0.3064(2)

185W

74

111

184.9534193(10)

75.1(3) d

β−

185Re

3/2−

185mW

197.43(5) keV

1.597(4) min

IT

185W

11/2+

186W

74

112

185.9543641(19)

Observationally Stable

0+

0.2843(19)

186m1W

1517.2(6) keV

18(1) µs

(7−)

186m2W

3542.8(21) keV

>3 ms

(16+)

187W

74

113

186.9571605(19)

23.72(6) h

β−

187Re

3/2−

188W

74

114

187.958489(4)

69.78(5) d

β−

188Re

0+

189W

74

115

188.96191(21)

11.6(3) min

β−

189Re

(3/2−)

190W

74

116

189.96318(18)

30.0(15) min

β−

190Re

0+

190mW

2381(5) keV

<3.1 ms

(10−)

191W

74

117

190.96660(21)

20 s
[>300 ns]

3/2−

192W

74

118

191.96817(64)

10 s
[>300 ns]

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

160Re

75

85

159.98212(43)

860(120) µs
[0.82(+15−9) ms]

p (91%)

159W

(2−)

α (9%)

156Ta

161Re

75

86

160.97759(22)

0.37(4) ms

p

160W

1/2+

161mRe

123.8(13) keV

15.6(9) ms

α

157Ta

11/2−

162Re

75

87

161.97600(22)

107(13) ms

α (94%)

158Ta

(2−)

β+ (6%)

162W

162mRe

173(10) keV

77(9) ms

α (91%)

158Ta

(9+)

β+ (9%)

162W

163Re

75

88

162.972081(21)

390(70) ms

β+ (68%)

163W

(1/2+)

α (32%)

159Ta

163mRe

115(4) keV

214(5) ms

α (66%)

159Ta

(11/2−)

β+ (34%)

163W

164Re

75

89

163.97032(17)

0.53(23) s

α (58%)

160Ta

high

β+ (42%)

164W

164mRe

120(120) keV

530(230) ms

(2)−

165Re

75

90

164.967089(30)

1 s

β+

165W

1/2+

α

161Ta

165mRe

47(26) keV

2.1(3) s

β+ (87%)

165W

11/2−

α (13%)

161Ta

166Re

75

91

165.96581(9)

2 s

β+

166W

2−

α

162Ta

167Re

75

92

166.96260(6)

3.4(4) s

α

163Ta

9/2−

β+

167W

167mRe

130(40) keV

5.9(3) s

β+ (99.3%)

167W

1/2+

α (.7%)

163Ta

168Re

75

93

167.96157(3)

4.4(1) s

β+ (99.99%)

168W

(5+,6+,7+)

α (.005%)

164Ta

168mRe

non-exist

6.6(15) s

169Re

75

94

168.95879(3)

8.1(5) s

β+ (99.99%)

169W

9/2−

α (.005%)

165Ta

169mRe

145(29) keV

15.1(15) s

β+ (99.8%)

169W

1/2+

α (.2%)

164Ta

170Re

75

95

169.958220(28)

9.2(2) s

β+ (99.99%)

170W

(5+)

α (.01%)

166Ta

171Re

75

96

170.95572(3)

15.2(4) s

β+

171W

(9/2−)

172Re

75

97

171.95542(6)

15(3) s

β+

172W

(5)

172mRe

0(100) keV

55(5) s

β+

172W

(2)

173Re

75

98

172.95324(3)

1.98(26) min

β+

173W

(5/2−)

174Re

75

99

173.95312(3)

2.40(4) min

β+

174W

175Re

75

100

174.95138(3)

5.89(5) min

β+

175W

(5/2−)

176Re

75

101

175.95162(3)

5.3(3) min

β+

176W

3+

177Re

75

102

176.95033(3)

14(1) min

β+

177W

5/2−

177mRe

84.71(10) keV

50(10) µs

5/2+

178Re

75

103

177.95099(3)

13.2(2) min

β+

178W

(3+)

179Re

75

104

178.949988(26)

19.5(1) min

β+

179W

(5/2)+

179m1Re

65.39(9) keV

95(25) µs

(5/2−)

179m2Re

1684.59(14)+Y keV

>0.4 µs

(23/2+)

180Re

75

105

179.950789(23)

2.44(6) min

β+

180W

(1)−

181Re

75

106

180.950068(14)

19.9(7) h

β+

181W

5/2+

182Re

75

107

181.95121(11)

64.0(5) h

β+

182W

7+

182m1Re

60(100) keV

12.7(2) h

β+

182W

2+

182m2Re

235.736(10)+X keV

585(21) ns

2−

182m3Re

461.3(1)+X keV

0.78(9) µs

(4−)

183Re

75

108

182.950820(9)

70.0(14) d

EC

183W

5/2+

183mRe

1907.6(3) keV

1.04(4) ms

IT

183Re

(25/2+)

184Re

75

109

183.952521(5)

38.0(5) d

β+

184W

3(−)

184mRe

188.01(4) keV

169(8) d

IT (75.4%)

184Re

8(+)

β+ (24.6%)

184W

185Re

75

110

184.9529550(13)

Observationally Stable

5/2+

0.3740(2)

185mRe

2124(2) keV

123(23) ns

(21/2)

186Re

75

111

185.9549861(13)

3.7186(5) d

β− (93.1%)

186Os

1−

EC (6.9%)

186W

186mRe

149(7) keV

2.0(5)×105 y

IT (90%)

186Re

(8+)

β− (10%)

186Os

187Re

75

112

186.9557531(15)

41.2(2)×109 y

β−

187Os

5/2+

0.6260(2)

188Re

75

113

187.9581144(15)

17.0040(22) h

β−

188Os

1−

188mRe

172.069(9) keV

18.59(4) min

IT

188Re

(6)−

189Re

75

114

188.959229(9)

24.3(4) h

β−

189Os

5/2+

190Re

75

115

189.96182(16)

3.1(3) min

β−

190Os

(2)−

190mRe

210(50) keV

3.2(2) h

β− (54.4%)

190Os

(6−)

IT (45.6%)

190Re

191Re

75

116

190.963125(11)

9.8(5) min

β−

191Os

(3/2+,1/2+)

192Re

75

117

191.96596(21)

16(1) s

β−

192Os

193Re

75

118

192.96747(21)

30 s [>300 ns]

5/2+

194Re

75

119

193.97042(32)

2 s [>300 ns]

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

161Os

76

85

0.64(6) ms

α

157W

162Os

76

86

161.98443(54)

1.87(18) ms

α

158W

0+

163Os

76

87

162.98269(43)

5.5(6) ms

α

159W

7/2−

β+, p (rare)

162W

β+ (rare)

163Re

164Os

76

88

163.97804(22)

21(1) ms

α (98%)

160W

0+

β+ (2%)

164Re

165Os

76

89

164.97676(22)

71(3) ms

α (60%)

161W

(7/2−)

β+ (40%)

165Re

166Os

76

90

165.972691(20)

216(9) ms

α (72%)

162W

0+

β+ (28%)

166Re

167Os

76

91

166.97155(8)

810(60) ms

α (67%)

163W

3/2−

β+ (33%)

167Re

168Os

76

92

167.967804(13)

2.06(6) s

β+ (51%)

168Re

0+

α (49%)

164W

169Os

76

93

168.967019(27)

3.40(9) s

β+ (89%)

169Re

3/2−

α (11%)

165W

170Os

76

94

169.963577(12)

7.46(23) s

β+ (91.4%)

170Re

0+

α (8.6%)

176W

171Os

76

95

170.963185(20)

8.3(2) s

β+ (98.3%)

171Re

(5/2−)

α (1.7%)

167W

172Os

76

96

171.960023(16)

19.2(5) s

β+ (98.9%)

172Re

0+

α (1.1%)

168W

173Os

76

97

172.959808(16)

22.4(9) s

β+ (99.6%)

173Re

(5/2−)

α (.4%)

169W

174Os

76

98

173.957062(12)

44(4) s

β+ (99.97%)

174Re

0+

α (.024%)

170W

175Os

76

99

174.956946(15)

1.4(1) min

β+

175Re

(5/2−)

176Os

76

100

175.95481(3)

3.6(5) min

β+

176Re

0+

177Os

76

101

176.954965(17)

3.0(2) min

β+

177Re

1/2−

178Os

76

102

177.953251(18)

5.0(4) min

β+

178Re

0+

179Os

76

103

178.953816(19)

6.5(3) min

β+

179Re

(1/2−)

180Os

76

104

179.952379(22)

21.5(4) min

β+

180Re

0+

181Os

76

105

180.95324(3)

105(3) min

β+

181Re

1/2−

181m1Os

48.9(2) keV

2.7(1) min

β+

181Re

(7/2)−

181m2Os

156.5(7) keV

316(18) ns

(9/2)+

182Os

76

106

181.952110(23)

22.10(25) h

EC

182Re

0+

183Os

76

107

182.95313(5)

13.0(5) h

β+

183Re

9/2+

183mOs

170.71(5) keV

9.9(3) h

β+ (85%)

183Re

1/2−

IT (15%)

183Os

184Os

76

108

183.9524891(14)

Observationally Stable

0+

2(1)×10−4

185Os

76

109

184.9540423(14)

93.6(5) d

EC

185Re

1/2−

185m1Os

102.3(7) keV

3.0(4) µs

(7/2−)

185m2Os

275.7(8) keV

0.78(5) µs

(11/2+)

186Os

76

110

185.9538382(15)

2.0(11)×1015 y

α

182W

0+

0.0159(3)

187Os

76

111

186.9557505(15)

Observationally Stable

1/2−

0.0196(2)

188Os

76

112

187.9558382(15)

Observationally Stable

0+

0.1324(8)

189Os

76

113

188.9581475(16)

Observationally Stable

3/2−

0.1615(5)

189mOs

30.812(15) keV

5.81(6) h

IT

189Os

9/2−

190Os

76

114

189.9584470(16)

Observationally Stable

0+

0.2626(2)

190mOs

1705.4(2) keV

9.9(1) min

IT

190Os

(10)−

191Os

76

115

190.9609297(16)

15.4(1) d

β−

191Ir

9/2−

191mOs

74.382(3) keV

13.10(5) h

IT

191Os

3/2−

192Os

76

116

191.9614807(27)

Observationally Stable

0+

0.4078(19)

192mOs

2015.40(11) keV

5.9(1) s

IT (87%)

192Os

(10−)

β− (13%)

192Ir

193Os

76

117

192.9641516(27)

30.11(1) h

β−

193Ir

3/2−

194Os

76

118

193.9651821(28)

6.0(2) y

β−

194Ir

0+

195Os

76

119

194.96813(54)

6.5 min

β−

195Ir

3/2−

196Os

76

120

195.96964(4)

34.9(2) min

β−

196Ir

0+

197Os

76

121

2.8(6) min

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

164Ir

77

87

163.99220(44)

1 ms

2−

164mIr

270(110) keV

94(27) µs

9+

165Ir

77

88

164.98752(23)

<1 µs

p

164Os

1/2+

α (rare)

161Re

165mIr

180(50) keV

300(60) µs

p (87%)

164Os

11/2−

α (13%)

161Re

166Ir

77

89

165.98582(22)

10.5(22) ms

α (93%)

162Re

(2−)

p (7%)

165Os

166mIr

172(6) keV

15.1(9) ms

α (98.2%)

162Re

(9+)

p (1.8%)

165Os

167Ir

77

90

166.981665(20)

35.2(20) ms

α (48%)

163Re

1/2+

p (32%)

166Os

β+ (20%)

167Os

167mIr

175.3(22) keV

30.0(6) ms

α (80%)

163Re

11/2−

β+ (20%)

167Os

p (.4%)

166Os

168Ir

77

91

167.97988(16)

161(21) ms

α

164Re

high

β+ (rare)

168Os

168mIr

50(100) keV

125(40) ms

α

164Re

low

169Ir

77

92

168.976295(28)

780(360) ms
[0.64(+46−24) s]

α

165Re

1/2+

β+ (rare)

169Os

169mIr

154(24) keV

308(22) ms

α (72%)

165Re

11/2−

β+ (28%)

169Os

170Ir

77

93

169.97497(11)

910(150) ms
[0.87(+18−12) s]

β+ (64%)

170Os

low

α (36%)

166Re

170mIr

270(70) keV

440(60) ms

high

171Ir

77

94

170.97163(4)

3.6(10) s
[3.2(+13−7) s]

α (58%)

167Re

1/2+

β+ (42%)

171Os

171mIr

180(30) keV

1.40(10) s

(11/2−)

172Ir

77

95

171.97046(11)

4.4(3) s

β+ (98%)

172Os

(3+)

α (2%)

168Re

172mIr

280(100) keV

2.0(1) s

β+ (77%)

172Os

(7+)

α (23%)

168Re

173Ir

77

96

172.967502(15)

9.0(8) s

β+ (93%)

173Os

(3/2+,5/2+)

α (7%)

169Re

173mIr

253(27) keV

2.20(5) s

β+ (88%)

173Os

(11/2−)

α (12%)

169Re

174Ir

77

97

173.966861(30)

7.9(6) s

β+ (99.5%)

174Os

(3+)

α (.5%)

170Re

174mIr

193(11) keV

4.9(3) s

β+ (99.53%)

174Os

(7+)

α (.47%)

170Re

175Ir

77

98

174.964113(21)

9(2) s

β+ (99.15%)

175Os

(5/2−)

α (.85%)

171Re

176Ir

77

99

175.963649(22)

8.3(6) s

β+ (97.9%)

176Os

α (2.1%)

172Re

177Ir

77

100

176.961302(21)

30(2) s

β+ (99.94%)

177Os

5/2−

α (.06%)

173Re

178Ir

77

101

177.961082(21)

12(2) s

β+

178Os

179Ir

77

102

178.959122(12)

79(1) s

β+

179Os

(5/2)−

180Ir

77

103

179.959229(23)

1.5(1) min

β+

180Os

(4,5)(+)

181Ir

77

104

180.957625(28)

4.90(15) min

β+

181Os

(5/2)−

182Ir

77

105

181.958076(23)

15(1) min

β+

182Os

(3+)

183Ir

77

106

182.956846(27)

57(4) min

β+ ( 99.95%)

183Os

5/2−

α (.05%)

179Re

184Ir

77

107

183.95748(3)

3.09(3) h

β+

184Os

5−

184m1Ir

225.65(11) keV

470(30) µs

3+

184m2Ir

328.40(24) keV

350(90) ns

(7)+

185Ir

77

108

184.95670(3)

14.4(1) h

β+

185Os

5/2−

186Ir

77

109

185.957946(18)

16.64(3) h

β+

186Os

5+

186mIr

0.8(4) keV

1.92(5) h

β+

186Os

2−

IT (rare)

186Ir

187Ir

77

110

186.957363(7)

10.5(3) h

β+

187Os

3/2+

187m1Ir

186.15(4) keV

30.3(6) ms

IT

187Ir

9/2−

187m2Ir

433.81(9) keV

152(12) ns

11/2−

188Ir

77

111

187.958853(8)

41.5(5) h

β+

188Os

1−

188mIr

970(30) keV

4.2(2) ms

IT

188Ir

7+

β+ (rare)

188Os

189Ir

77

112

188.958719(14)

13.2(1) d

EC

189Os

3/2+

189m1Ir

372.18(4) keV

13.3(3) ms

IT

189Ir

11/2−

189m2Ir

2333.3(4) keV

3.7(2) ms

(25/2)+

190Ir

77

113

189.9605460(18)

11.78(10) d

β+

190Os

4−

190m1Ir

26.1(1) keV

1.120(3) h

IT

190Ir

(1−)

190m2Ir

36.154(25) keV

>2 µs

(4)+

190m3Ir

376.4(1) keV

3.087(12) h

(11)−

191Ir

77

114

190.9605940(18)

Observationally Stable

3/2+

0.373(2)

191m1Ir

171.24(5) keV

4.94(3) s

IT

191Ir

11/2−

191m2Ir

2120(40) keV

5.5(7) s

192Ir

77

115

191.9626050(18)

73.827(13) d

β− (95.24%)

192Pt

4+

EC (4.76%)

192Os

192m1Ir

56.720(5) keV

1.45(5) min

1−

192m2Ir

168.14(12) keV

241(9) y

(11−)

193Ir

77

116

192.9629264(18)

Observationally Stable

3/2+

0.627(2)

193mIr

80.240(6) keV

10.53(4) d

IT

193Ir

11/2−

194Ir

77

117

193.9650784(18)

19.28(13) h

β−

194Pt

1−

194m1Ir

147.078(5) keV

31.85(24) ms

IT

194Ir

(4+)

194m2Ir

370(70) keV

171(11) d

(10,11)(−)

195Ir

77

118

194.9659796(18)

2.5(2) h

β−

195Pt

3/2+

195mIr

100(5) keV

3.8(2) h

β− (95%)

195Pt

11/2−

IT (5%)

195Ir

196Ir

77

119

195.96840(4)

52(1) s

β−

196Pt

(0−)

196mIr

210(40) keV

1.40(2) h

β− (99.7%)

196Pt

(10,11−)

IT

196Ir

197Ir

77

120

196.969653(22)

5.8(5) min

β−

197Pt

3/2+

197mIr

115(5) keV

8.9(3) min

β− (99.75%)

197Pt

11/2−

IT (.25%)

197Ir

198Ir

77

121

197.97228(21)

8(1) s

β−

198Pt

199Ir

77

122

198.97380(4)

20 s

β−

199Pt

3/2+

 

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

166Pt

78

88

165.99486(54)

300(100) µs

0+

167Pt

78

89

166.99298(44)

700(200) µs

7/2−

168Pt

78

90

167.98815(22)

2.00(18) ms

α

164Os

0+

β+ (rare)

168Ir

169Pt

78

91

168.98672(22)

3.7(15) ms

α

165Os

3/2−

β+ (rare)

169Ir

170Pt

78

92

169.982495(20)

14.0(2) ms

α (98%)

166Os

0+

β+ (2%)

170Ir

171Pt

78

93

170.98124(9)

51(2) ms

α (99%)

167Os

3/2−

β+ (1%)

171Ir

172Pt

78

94

171.977347(14)

98.4(24) ms

α (77%)

168Os

0+

β+ (23%)

172Ir

173Pt

78

95

172.97644(6)

365(7) ms

α (84%)

169Os

5/2−

β+ (16%)

173Ir

174Pt

78

96

173.972819(13)

0.889(17) s

α (83%)

170Os

0+

β+ (17%)

174Ir

175Pt

78

97

174.972421(20)

2.53(6) s

α (64%)

171Os

5/2−

β+ (36%)

175Ir

176Pt

78

98

175.968945(15)

6.33(15) s

β+ (62%)

176Ir

0+

α (38%)

172Os

177Pt

78

99

176.968469(16)

10.6(4) s

β+ (94.4%)

177Ir

5/2−

α (5.6%)

173Os

177mPt

147.4(4) keV

2.2(3) µs

1/2−

178Pt

78

100

177.965649(12)

21.1(6) s

β+ (92.3%)

178Ir

0+

α (7.7%)

174Os

179Pt

78

101

178.965363(10)

21.2(4) s

β+ (99.76%)

179Ir

1/2−

α (0.24%)

175Os

180Pt

78

102

179.963031(12)

56(2) s

β+ (99.7%)

180Ir

0+

α (0.3%)

176Os

181Pt

78

103

180.963097(16)

52.0(22) s

β+ (99.93%)

181Ir

1/2−

α (0.074%)

177Os

182Pt

78

104

181.961171(17)

2.2(1) min

β+ (99.96%)

182Ir

0+

α (.038%)

178Os

183Pt

78

105

182.961597(17)

6.5(10) min

β+ (99.99%)

183Ir

1/2−

α (.0096%)

179Os

183m1Pt

34.50(8) keV

43(5) s

β+ (99.99%)

183Ir

(7/2)−

α (4×10−4%)

179Os

IT

183Pt

183m2Pt

195.68(11) keV

>150 ns

(9/2)+

184Pt

78

106

183.959922(19)

17.3(2) min

β+ (99.99%)

184Ir

0+

α (.00169%)

180Os

184mPt

1839.4(16) keV

1.01(5) ms

IT

184Pt

8−

185Pt

78

107

184.96062(4)

70.9(24) min

β+ (99.99%)

185Ir

(9/2+)

α (.005%)

181Os

185mPt

103.4(2) keV

33.0(8) min

β+ (98%)

185Ir

(1/2−)

α (2%)

181Os

186Pt

78

108

185.959351(23)

2.08(5) h

β+ (99.99%)

186Ir

0+

α (1.4×10−4%)

182Os

187Pt

78

109

186.96059(3)

2.35(3) h

β+

187Ir

3/2−

188Pt

78

110

187.959395(6)

10.2(3) d

EC (99.99%)

188Ir

0+

α (2.6×10−5%)

184Os

189Pt

78

111

188.960834(12)

10.87(12) h

β+

189Ir

3/2−

189m1Pt

172.80(6) keV

464(25) ns

9/2−

189m2Pt

191.6(4) keV

143(5) µs

(13/2+)

190Pt

78

112

189.959932(6)

6.5(3)×1011 y

α

186Os

0+

1.4(1)×10−4

191Pt

78

113

190.961677(5)

2.862(7) d

EC

191Ir

3/2−

191m1Pt

100.67(2) keV

>1 µs

(9/2)−

191m2Pt

149.04(2) keV

95(5) µs

(13/2)+

192Pt

78

114

191.9610380(27)

Observationally Stable

0+

0.00782(7)

193Pt

78

115

192.9629874(18)

50(6) y

EC

193Ir

1/2−

193mPt

149.78(4) keV

4.33(3) d

IT

193Pt

13/2+

194Pt

78

116

193.9626803(9)

Observationally Stable

0+

0.32967(99)

195Pt

78

117

194.9647911(9)

Observationally Stable

1/2−

0.33832(10)

195mPt

259.30(8) keV

4.010(5) d

IT

195Pt

13/2+

196Pt

78

118

195.9649515(9)

Observationally Stable

0+

0.25242(41)

197Pt

78

119

196.9673402(9)

19.8915(19) h

β−

197Au

1/2−

197mPt

399.59(20) keV

95.41(18) min

IT (96.7%)

197Pt

13/2+

β− (3.3%)

197Au

198Pt

78

120

197.967893(3)

Observationally Stable

0+

0.07163(55)

199Pt

78

121

198.970593(3)

30.80(21) min

β−

199Au

5/2−

199mPt

424(2) keV

13.6(4) s

IT

199Pt

(13/2)+

200Pt

78

122

199.971441(22)

12.5(3) h

β−

200Au

0+

201Pt

78

123

200.97451(5)

2.5(1) min

β−

201Au

(5/2−)

202Pt

78

124

201.97574(32)

44(15) h

β−

202Au

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

169Au

79

90

168.99808(32)

150 µs

1/2+

170Au

79

91

169.99612(22)

310(50) µs
[286(+50−40) µs]

(2−)

170mAu

275(14) keV

630(60) µs
[0.62(+6−5) ms]

(9+)

171Au

79

92

170.991879(28)

30(5) µs

p

170Pt

(1/2+)

α (rare)

167Ir

171mAu

250(16) keV

1.014(19) ms

α (54%)

167Ir

11/2−

p (46%)

170Pt

172Au

79

93

171.99004(17)

4.7(11) ms

α (98%)

168Ir

high

p (2%)

171Pt

173Au

79

94

172.986237(28)

25(1) ms

α

169Ir

(1/2+)

β+ (rare)

173Pt

173mAu

214(23) keV

14.0(9) ms

α (96%)

169Ir

(11/2−)

β+ (4%)

173Pt

174Au

79

95

173.98476(11)

139(3) ms

α

170Ir

low

β+ (rare)

174Pt

174mAu

360(70) keV

171(29) ms

high

175Au

79

96

174.98127(5)

100 ms

α (82%)

171Ir

1/2+

β+ (18%)

175Pt

175mAu

200(30) keV

156(3) ms

α

171Ir

11/2−

β+

175Pt

176Au

79

97

175.98010(11)

1.08(17) s
[0.84(+17−14) s]

α (60%)

172Ir

(5−)

β+ (40%)

176Pt

176mAu

150(100) keV

860(160) ms

(7+)

177Au

79

98

176.976865(14)

1.462(32) s

β+ (60%)

177Pt

(1/2+,3/2+)

α (40%)

173Ir

177mAu

216(26) keV

1.180(12) s

11/2−

178Au

79

99

177.97603(6)

2.6(5) s

β+ (60%)

178Pt

α (40%)

174Ir

179Au

79

100

178.973213(18)

7.1(3) s

β+ (78%)

179Pt

5/2−

α (22%)

175Ir

179mAu

99(16) keV

(11/2−)

180Au

79

101

179.972521(23)

8.1(3) s

β+ (98.2%)

180Pt

α (1.8%)

176Ir

181Au

79

102

180.970079(21)

13.7(14) s

β+ (97.3%)

181Pt

(3/2−)

α (2.7%)

177Ir

182Au

79

103

181.969618(22)

15.5(4) s

β+ (99.87%)

182Pt

(2+)

α (.13%)

178Ir

183Au

79

104

182.967593(11)

42.8(10) s

β+ (99.2%)

183Pt

(5/2)−

α (.8%)

179Ir

183m1Au

73.3(4) keV

>1 µs

(1/2)+

183m2Au

230.6(6) keV

<1 µs

(11/2)−

184Au

79

105

183.967452(24)

20.6(9) s

β+

184Pt

5+

184mAu

68.46(1) keV

47.6(14) s

β+ (70%)

184Pt

2+

IT (30%)

184Au

α (.013%)

180Ir

185Au

79

106

184.965789(28)

4.25(6) min

β+ (99.74%)

185Pt

5/2−

α (.26%)

181Ir

185mAu

100(100) keV

6.8(3) min

1/2+

186Au

79

107

185.965953(23)

10.7(5) min

β+ (99.9992%)

186Pt

3−

α (8×10−4%)

182Ir

186mAu

227.77(7) keV

110(10) ns

2+

187Au

79

108

186.964568(27)

8.4(3) min

β+ (99.997%)

187Pt

1/2+

α (.003%)

183Ir

187mAu

120.51(16) keV

2.3(1) s

IT

187Au

9/2−

188Au

79

109

187.965324(22)

8.84(6) min

β+

188Pt

1(−)

189Au

79

110

188.963948(22)

28.7(3) min

β+ (99.9997%)

189Pt

1/2+

α (3×10−4%)

185Ir

189m1Au

247.23(16) keV

4.59(11) min

β+

189Pt

11/2−

IT (rare)

189Au

189m2Au

325.11(16) keV

190(15) ns

9/2−

189m3Au

2554.7(12) keV

242(10) ns

31/2+

190Au

79

111

189.964700(17)

42.8(10) min

β+

190Pt

1−

α (10−6%)

186Ir

190mAu

200(150) keV

125(20) ms

IT

190Au

11−

β+ (rare)

190Pt

191Au

79

112

190.96370(4)

3.18(8) h

β+

191Pt

3/2+

191m1Au

266.2(5) keV

920(110) ms

IT

191Au

(11/2−)

191m2Au

2490(1) keV

>400 ns

192Au

79

113

191.964813(17)

4.94(9) h

β+

192Pt

1−

192m1Au

135.41(25) keV

29 ms

IT

192Au

(5)+

192m2Au

431.6(5) keV

160(20) ms

(11−)

193Au

79

114

192.964150(11)

17.65(15) h

β+ (100%)

193Pt

3/2+

α (10−5%)

189Ir

193m1Au

290.19(3) keV

3.9(3) s

IT (99.97%)

193Au

11/2−

β+ (.03%)

193Pt

193m2Au

2486.5(6) keV

150(50) ns

(31/2+)

194Au

79

115

193.965365(11)

38.02(10) h

β+

194Pt

1−

194m1Au

107.4(5) keV

600(8) ms

IT

194Au

(5+)

194m2Au

475.8(6) keV

420(10) ms

(11−)

195Au

79

116

194.9650346(14)

186.098(47) d

EC

195Pt

3/2+

195mAu

318.58(4) keV

30.5(2) s

IT

195Au

11/2−

196Au

79

117

195.966570(3)

6.1669(6) d

β+ (93.05%)

196Pt

2−

β− (6.95%)

196Hg

196m1Au

84.660(20) keV

8.1(2) s

IT

196Au

5+

196m2Au

595.66(4) keV

9.6(1) h

12−

197Au

79

118

196.9665687(6)

Observationally Stable

3/2+

1.0000

197mAu

409.15(8) keV

7.73(6) s

IT

197Au

11/2−

198Au

79

119

197.9682423(6)

2.69517(21) d

β−

198Hg

2−

198m1Au

312.2200(20) keV

124(4) ns

5+

198m2Au

811.7(15) keV

2.27(2) d

IT

198Au

(12−)

199Au

79

120

198.9687652(6)

3.139(7) d

β−

199Hg

3/2+

199mAu

548.9368(21) keV

440(30) µs

(11/2)−

200Au

79

121

199.97073(5)

48.4(3) min

β−

200Hg

1(−)

200mAu

970(70) keV

18.7(5) h

β− (82%)

200Hg

12−

IT (18%)

200Au

201Au

79

122

200.971657(3)

26(1) min

β−

201Hg

3/2+

202Au

79

123

201.97381(18)

28.8(19) s

β−

202Hg

(1−)

203Au

79

124

202.975155(3)

53(2) s

β−

203Hg

3/2+

204Au

79

125

203.97772(22)

39.8(9) s

β−

204Hg

(2−)

205Au

79

126

204.97987(32)

31(2) s

β−

205Hg

3/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

171Hg

80

91

171.00376(32)

80(30) µs
[59(+36−16) µs]

3/2−

172Hg

80

92

171.99883(22)

420(240) µs
[0.25(+35−9) ms]

0

173Hg

80

93

172.99724(22)

1.1(4) ms
[0.6(+5−2) ms]

3/2−

174Hg

80

94

173.992864(21)

2.0(4) ms
[2.1(+18−7) ms]

0+

175Hg

80

95

174.99142(11)

10.8(4) ms

α

171Pt

5/2−

176Hg

80

96

175.987355(15)

20.4(15) ms

α (98.6%)

172Pt

0+

β+ (1.4%)

176Au

177Hg

80

97

176.98628(8)

127.3(18) ms

α (85%)

173Pt

5/2−

β+ (15%)

177Au

178Hg

80

98

177.982483(14)

0.269(3) s

α (70%)

174Pt

0+

β+ (30%)

178Au

179Hg

80

99

178.981834(29)

1.09(4) s

α (53%)

175Pt

5/2−

β+ (47%)

179Au

β+, p (.15%)

178Pt

180Hg

80

100

179.978266(15)

2.58(1) s

β+ (52%)

180Au

0+

α (48%)

176Pt

SF

100Ru, 80Kr

181Hg

80

101

180.977819(17)

3.6(1) s

β+ (64%)

181Au

1/2(−)

α (36%)

177Pt

β+, p (.014%)

180Pt

β+, α (9×10−6%)

177Ir

181mHg

210(40) keV

13/2+

182Hg

80

102

181.97469(1)

10.83(6) s

β+ (84.8%)

182Au

0+

α (15.2%)

178Pt

β+, p (10−5%)

181Pt

183Hg

80

103

182.974450(9)

9.4(7) s

β+ (74.5%)

183Au

1/2−

α (25.5%)

179Pt

β+, p (5.6×10−4%)

182Pt

183m1Hg

198(14) keV

13/2+

183m2Hg

240(40) keV

5 s

β+

183Au

13/2+

184Hg

80

104

183.971713(11)

30.6(3) s

β+ (98.89%)

184Au

0+

α (1.11%)

180Pt

185Hg

80

105

184.971899(17)

49.1(10) s

β+ (94%)

185Au

1/2−

α (6%)

181Pt

185mHg

99.3(5) keV

21.6(15) s

IT (54%)

185Hg

13/2+

β+ (46%)

185Au

α (.03%)

181Pt

186Hg

80

106

185.969362(12)

1.38(6) min

β+ (99.92%)

186Au

0+

α (.016%)

182Pt

186mHg

2217.3(4) keV

82(5) µs

(8−)

187Hg

80

107

186.969814(15)

1.9(3) min

β+

187Au

3/2−

α (1.2×10−4%)

183Pt

187mHg

59(16) keV

2.4(3) min

β+

187Au

13/2+

α (2.5×10−4%)

183Pt

188Hg

80

108

187.967577(12)

3.25(15) min

β+

188Au

0+

α (3.7×10−5%)

184Pt

188mHg

2724.3(4) keV

134(15) ns

(12+)

189Hg

80

109

188.96819(4)

7.6(1) min

β+

189Au

3/2−

α (3×10−5%)

185Pt

189mHg

80(30) keV

8.6(1) min

β+

189Au

13/2+

α (3×10−5%)

185Pt

190Hg

80

110

189.966322(17)

20.0(5) min

β+

190Au

0+

α (5×10−5%)

186Pt

191Hg

80

111

190.967157(24)

49(10) min

β+

191Au

3/2(−)

191mHg

128(22) keV

50.8(15) min

β+

191Au

13/2+

192Hg

80

112

191.965634(17)

4.85(20) h

EC

192Au

0+

α (4×10−6%)

188Pt

193Hg

80

113

192.966665(17)

3.80(15) h

β+

193Au

3/2−

193mHg

140.76(5) keV

11.8(2) h

β+ (92.9%)

193Au

13/2+

IT (7.1%)

193Hg

194Hg

80

114

193.965439(13)

444(77) y

EC

194Au

0+

195Hg

80

115

194.966720(25)

10.53(3) h

β+

195Au

1/2−

195mHg

176.07(4) keV

41.6(8) h

IT (54.2%)

195Hg

13/2+

β+ (45.8%)

195Au

196Hg

80

116

195.965833(3)

Observationally Stable

0+

0.0015(1)

197Hg

80

117

196.967213(3)

64.14(5) h

EC

197Au

1/2−

197mHg

298.93(8) keV

23.8(1) h

IT (91.4%)

197Hg

13/2+

EC (8.6%)

197Au

198Hg

80

118

197.9667690(4)

Observationally Stable

0+

0.0997(20)

199Hg

80

119

198.9682799(4)

Observationally Stable

1/2−

0.1687(22)

199mHg

532.48(10) keV

42.66(8) min

IT

199Hg

13/2+

200Hg

80

120

199.9683260(4)

Observationally Stable

0+

0.2310(19)

201Hg

80

121

200.9703023(6)

Observationally Stable

3/2−

0.1318(9)

201mHg

766.22(15) keV

94(3) µs

13/2+

202Hg

80

122

201.9706430(6)

Observationally Stable

0+

0.2986(26)

203Hg

80

123

202.9728725(18)

46.595(6) d

β−

203Tl

5/2−

203mHg

933.14(23) keV

24(4) µs

(13/2+)

204Hg

80

124

203.9734939(4)

Observationally Stable

0+

0.0687(15)

205Hg

80

125

204.976073(4)

5.14(9) min

β−

205Tl

1/2−

205mHg

1556.40(17) keV

1.09(4) ms

IT

205Hg

13/2+

206Hg

80

126

205.977514(22)

8.15(10) min

β−

206Tl

0+

207Hg

80

127

206.98259(16)

2.9(2) min

β−

207Tl

(9/2+)

208Hg

80

128

207.98594(32)

42(5) min
[41(+5−4) min]

β−

208Tl

0+

209Hg

80

129

208.99104(21)

37(8) s

9/2+

210Hg

80

130

209.99451(32)

10 min
[>300 ns]

0+

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

176Tl

81

95

176.00059(21)

5.2(+30−14) ms

(3–,4–,5–)

177Tl

81

96

176.996427(27)

18(5) ms

p

176Hg

(1/2+)

α (rare)

173Au

177mTl

807(18) keV

230(40) µs

p

176Hg

(11/2−)

α

173Au

178Tl

81

97

177.99490(12)

255(10) ms

α

174Au

p (rare)

177Hg

179Tl

81

98

178.99109(5)

270(30) ms

α

175Au

(1/2+)

p (rare)

178Hg

179mTl

860(30) keV

1.60(16) ms

α

175Au

(9/2−)

IT (rare)

179Tl

180Tl

81

99

179.98991(13)

1.5(2) s

α (75%)

176Au

β+ (25%)

180Hg

EC, fission (10−4%)

100Ru, 80Kr

181Tl

81

100

180.986257(10)

3.2(3) s

α

177Au

1/2+

β+

181Hg

181mTl

857(29) keV

1.7(4) ms

α

177Au

9/2−

β+

181Hg

182Tl

81

101

181.98567(8)

2.0(3) s

β+ (96%)

182Hg

2−

α (4%)

178Au

182m1Tl

100(100) keV

2.9(5) s

α

178Au

(7+)

β+ (rare)

182Hg

182m2Tl

600(140) keV

10−

183Tl

81

102

182.982193(10)

6.9(7) s

β+ (98%)

183Hg

1/2+

α (2%)

179Au

183m1Tl

630(17) keV

53.3(3) ms

IT (99.99%)

183Tl

9/2−

α (.01%)

179Au

183m2Tl

976.8(3) keV

1.48(10) µs

(13/2+)

184Tl

81

103

183.98187(5)

9.7(6) s

β+

184Hg

2−

184m1Tl

100(100) keV

10 s

β+ (97.9%)

184Hg

7+

α (2.1%)

180Au

184m2Tl

500(140) keV

>20 ns

(10−)

185Tl

81

104

184.97879(6)

19.5(5) s

α

181Au

1/2+

β+

185Hg

185mTl

452.8(20) keV

1.93(8) s

IT (99.99%)

185Tl

9/2−

α (.01%)

181Au

β+

185Hg

186Tl

81

105

185.97833(20)

40 s

β+

186Hg

(2−)

α (.006%)

182Au

186m1Tl

320(180) keV

27.5(10) s

β+

186Hg

(7+)

186m2Tl

690(180) keV

2.9(2) s

(10−)

187Tl

81

106

186.975906(9)

~51 s

β+

187Hg

(1/2+)

α (rare)

183Au

187mTl

335(3) keV

15.60(12) s

α

183Au

(9/2−)

IT

187Tl

β+

187Hg

188Tl

81

107

187.97601(4)

71(2) s

β+

188Hg

(2−)

188m1Tl

40(30) keV

71(1) s

β+

188Hg

(7+)

188m2Tl

310(30) keV

41(4) ms

(9−)

189Tl

81

108

188.973588(12)

2.3(2) min

β+

189Hg

(1/2+)

189mTl

257.6(13) keV

1.4(1) min

β+ (96%)

189Hg

(9/2−)

IT (4%)

189Tl

190Tl

81

109

189.97388(5)

2.6(3) min

β+

190Hg

2(−)

190m1Tl

130(90) keV

3.7(3) min

β+

190Hg

7(+)

190m2Tl

290(70) keV

750(40) µs

(8−)

190m3Tl

410(70) keV

>1 µs

9−

191Tl

81

110

190.971786(8)

20 min

β+

191Hg

(1/2+)

191mTl

297(7) keV

5.22(16) min

β+

191Hg

9/2(−)

192Tl

81

111

191.97223(3)

9.6(4) min

β+

192Hg

(2−)

192m1Tl

160(50) keV

10.8(2) min

β+

192Hg

(7+)

192m2Tl

407(54) keV

296(5) ns

(8−)

193Tl

81

112

192.97067(12)

21.6(8) min

β+

193Hg

1/2(+)

193mTl

369(4) keV

2.11(15) min

IT (75%)

193Tl

9/2−

β+ (25%)

193Hg

194Tl

81

113

193.97120(15)

33.0(5) min

β+

194Hg

2−

α (10−7%)

190Au

194mTl

300(200) keV

32.8(2) min

β+

194Hg

(7+)

195Tl

81

114

194.969774(15)

1.16(5) h

β+

195Hg

1/2+

195mTl

482.63(17) keV

3.6(4) s

IT

195Tl

9/2−

196Tl

81

115

195.970481(13)

1.84(3) h

β+

196Hg

2−

196mTl

394.2(5) keV

1.41(2) h

β+ (95.5%)

196Hg

(7+)

IT (4.5%)

196Tl

197Tl

81

116

196.969575(18)

2.84(4) h

β+

197Hg

1/2+

197mTl

608.22(8) keV

540(10) ms

IT

197Tl

9/2−

198Tl

81

117

197.97048(9)

5.3(5) h

β+

198Hg

2−

198m1Tl

543.5(4) keV

1.87(3) h

β+ (54%)

198Hg

7+

IT (46%)

198Tl

198m2Tl

687.2(5) keV

150(40) ns

(5+)

198m3Tl

742.3(4) keV

32.1(10) ms

(10−)

199Tl

81

118

198.96988(3)

7.42(8) h

β+

199Hg

1/2+

199mTl

749.7(3) keV

28.4(2) ms

IT

199Tl

9/2−

200Tl

81

119

199.970963(6)

26.1(1) h

β+

200Hg

2−

200m1Tl

753.6(2) keV

34.3(10) ms

IT

200Tl

7+

200m2Tl

762.0(2) keV

0.33(5) µs

5+

201Tl

81

120

200.970819(16)

72.912(17) h

EC

201Hg

1/2+

201mTl

919.50(9) keV

2.035(7) ms

IT

201Tl

(9/2−)

202Tl

81

121

201.972106(16)

12.23(2) d

β+

202Hg

2−

202mTl

950.19(10) keV

572(7) µs

7+

203Tl

81

122

202.9723442(14)

Observationally stable

1/2+

0.2952(1)

0.29494–0.29528

203mTl

3400(300) keV

7.7(5) µs

(25/2+)

204Tl

81

123

203.9738635(13)

3.78(2) y

β− (97.1%)

204Pb

2−

EC (2.9%)

204Hg

204m1Tl

1104.0(4) keV

63(2) µs

(7)+

204m2Tl

2500(500) keV

2.6(2) µs

(12−)

204m3Tl

3500(500) keV

1.6(2) µs

(20+)

205Tl

81

124

204.9744275(14)

Observationally stable

1/2+

0.7048(1)

0.70472–0.70506

205m1Tl

3290.63(17) keV

2.6(2) µs

25/2+

205m2Tl

4835.6(15) keV

235(10) ns

(35/2–)

206Tl

Radium E

81

125

205.9761103(15)

4.200(17) min

β−

206Pb

0−

Trace

206mTl

2643.11(19) keV

3.74(3) min

IT

206Tl

(12–)

207Tl

Actinium C

81

126

206.977419(6)

4.77(2) min

β−

207Pb

1/2+

Trace

207mTl

1348.1(3) keV

1.33(11) s

IT (99.9%)

207Tl

11/2–

β− (.1%)

207Pb

208Tl

Thorium C

81

127

207.9820187(21)

3.053(4) min

β−

208Pb

5(+)

Trace

209Tl

81

128

208.985359(8)

2.161(7) min

β−

209Pb

(1/2+)

210Tl

Radium C″

81

129

209.990074(12)

1.30(3) min

β− (99.991%)

210Pb

(5+)

Trace

β−, n (.009%)

209Pb

211Tl

81

130

210.99348(22)

1 min
[>300 ns]

1/2+

212Tl

81

131

211.99823(32)

30 s
[>300 ns]

5+

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

178Pb

82

96

178.003830(26)

0.23(15) ms

0+

179Pb

82

97

179.00215(21)

3 ms

5/2−

180Pb

82

98

179.997918(22)

4.5(11) ms

0+

181Pb

82

99

180.99662(10)

45(20) ms

α (98%)

177Hg

5/2−

β+ (2%)

181Tl

182Pb

82

100

181.992672(15)

60(40) ms
[55(+40−35) ms]

α (98%)

178Hg

0+

β+ (2%)

182Tl

183Pb

82

101

182.99187(3)

535(30) ms

α (94%)

179Hg

(3/2−)

β+ (6%)

183Tl

183mPb

94(8) keV

415(20) ms

α

179Hg

(13/2+)

β+ (rare)

183Tl

184Pb

82

102

183.988142(15)

490(25) ms

α

180Hg

0+

β+ (rare)

184Tl

185Pb

82

103

184.987610(17)

6.3(4) s

α

181Hg

3/2−

β+ (rare)

185Tl

185mPb

60(40) keV

4.07(15) s

α

181Hg

13/2+

β+ (rare)

185Tl

186Pb

82

104

185.984239(12)

4.82(3) s

α (56%)

182Hg

0+

β+ (44%)

186Tl

187Pb

82

105

186.983918(9)

15.2(3) s

β+

187Tl

(3/2−)

α

183Hg

187mPb

11(11) keV

18.3(3) s

β+ (98%)

187Tl

(13/2+)

α (2%)

183Hg

188Pb

82

106

187.980874(11)

25.5(1) s

β+ (91.5%)

188Tl

0+

α (8.5%)

184Hg

188m1Pb

2578.2(7) keV

830(210) ns

(8−)

188m2Pb

2800(50) keV

797(21) ns

189Pb

82

107

188.98081(4)

51(3) s

β+

189Tl

(3/2−)

189mPb

40(30) keV

1 min

β+ (99.6%)

189Tl

(13/2+)

α (.4%)

185Hg

190Pb

82

108

189.978082(13)

71(1) s

β+ (99.1%)

190Tl

0+

α (.9%)

186Hg

190m1Pb

2614.8(8) keV

150 ns

(10)+

190m2Pb

2618(20) keV

25 µs

(12+)

190m3Pb

2658.2(8) keV

7.2(6) µs

(11)−

191Pb

82

109

190.97827(4)

1.33(8) min

β+ (99.987%)

191Tl

(3/2−)

α (.013%)

187Hg

191mPb

20(50) keV

2.18(8) min

β+ (99.98%)

191Tl

13/2(+)

α (.02%)

187Hg

192Pb

82

110

191.975785(14)

3.5(1) min

β+ (99.99%)

192Tl

0+

α (.0061%)

188Hg

192m1Pb

2581.1(1) keV

164(7) ns

(10)+

192m2Pb

2625.1(11) keV

1.1(5) µs

(12+)

192m3Pb

2743.5(4) keV

756(21) ns

(11)−

193Pb

82

111

192.97617(5)

5 min

β+

193Tl

(3/2−)

193m1Pb

130(80) keV

5.8(2) min

β+

193Tl

13/2(+)

193m2Pb

2612.5(5)+X keV

135(+25−15) ns

(33/2+)

194Pb

82

112

193.974012(19)

12.0(5) min

β+ (100%)

194Tl

0+

α (7.3×10−6%)

190Hg

195Pb

82

113

194.974542(25)

~15 min

β+

195Tl

3/2-

195m1Pb

202.9(7) keV

15.0(12) min

β+

195Tl

13/2+

195m2Pb

1759.0(7) keV

10.0(7) µs

21/2−

196Pb

82

114

195.972774(15)

37(3) min

β+

196Tl

0+

α (3×10−5%)

192Hg

196m1Pb

1049.20(9) keV

<100 ns

2+

196m2Pb

1738.27(12) keV

<1 µs

4+

196m3Pb

1797.51(14) keV

140(14) ns

5−

196m4Pb

2693.5(5) keV

270(4) ns

(12+)

197Pb

82

115

196.973431(6)

8.1(17) min

β+

197Tl

3/2−

197m1Pb

319.31(11) keV

42.9(9) min

β+ (81%)

197Tl

13/2+

IT (19%)

197Pb

α (3×10−4%)

193Hg

197m2Pb

1914.10(25) keV

1.15(20) µs

21/2−

198Pb

82

116

197.972034(16)

2.4(1) h

β+

198Tl

0+

198m1Pb

2141.4(4) keV

4.19(10) µs

(7)−

198m2Pb

2231.4(5) keV

137(10) ns

(9)−

198m3Pb

2820.5(7) keV

212(4) ns

(12)+

199Pb

82

117

198.972917(28)

90(10) min

β+

199Tl

3/2−

199m1Pb

429.5(27) keV

12.2(3) min

IT (93%)

199Pb

(13/2+)

β+ (7%)

199Tl

199m2Pb

2563.8(27) keV

10.1(2) µs

(29/2−)

200Pb

82

118

199.971827(12)

21.5(4) h

β+

200Tl

0+

201Pb

82

119

200.972885(24)

9.33(3) h

EC (99%)

201Tl

5/2−

β+ (1%)

201Tl

201m1Pb

629.14(17) keV

61(2) s

13/2+

201m2Pb

2718.5+X keV

508(5) ns

(29/2−)

202Pb

82

120

201.972159(9)

52.5(28)×103 y

EC (99%)

202Tl

0+

α (1%)

198Hg

202m1Pb

2169.83(7) keV

3.53(1) h

IT (90.5%)

202Pb

9−

EC (9.5%)

202Tl

202m2Pb

4142.9(11) keV

110(5) ns

(16+)

202m3Pb

5345.9(13) keV

107(5) ns

(19−)

203Pb

82

121

202.973391(7)

51.873(9) h

EC

203Tl

5/2−

203m1Pb

825.20(9) keV

6.21(8) s

IT

203Pb

13/2+

203m2Pb

2949.47(22) keV

480(7) ms

29/2−

203m3Pb

2923.4+X keV

122(4) ns

(25/2−)

204Pb

82

122

203.9730436(13)

Observationally Stable

0+

0.014(1)

0.0104–0.0165

204m1Pb

1274.00(4) keV

265(10) ns

4+

204m2Pb

2185.79(5) keV

67.2(3) min

9−

204m3Pb

2264.33(4) keV

0.45(+10−3) µs

7−

205Pb

82

123

204.9744818(13)

15.3(7)×106 y

EC

205Tl

5/2−

205m1Pb

2.329(7) keV

24.2(4) µs

1/2−

205m2Pb

1013.839(13) keV

5.55(2) ms

13/2+

205m3Pb

3195.7(5) keV

217(5) ns

25/2−

206Pb

Radium G

82

124

205.9744653(13)

Observationally Stable

0+

0.241(1)

0.2084–0.2748

206m1Pb

2200.14(4) keV

125(2) µs

7−

206m2Pb

4027.3(7) keV

202(3) ns

12+

207Pb

Actinium D

82

125

206.9758969(13)

Observationally Stable

1/2−

0.221(1)

0.1762–0.2365

207mPb

1633.368(5) keV

806(6) ms

IT

207Pb

13/2+

208Pb

Thorium D

82

126

207.9766521(13)

Observationally Stable

0+

0.524(1)

0.5128–0.5621

208mPb

4895(2) keV

500(10) ns

10+

209Pb

82

127

208.9810901(19)

3.253(14) h

β−

209Bi

9/2+

Trace

210Pb

Radium D
Radiolead
Radio-lead

82

128

209.9841885(16)

22.3(22) y

β− (100%)

210Bi

0+

Trace

α (1.9×10−6%)

206Hg

210mPb

1278(5) keV

201(17) ns

8+

211Pb

Actinium B

82

129

210.9887370(29)

36.1(2) min

β−

211Bi

9/2+

Trace

212Pb

Thorium B

82

130

211.9918975(24)

10.64(1) h

β−

212Bi

0+

Trace

212mPb

1335(10) keV

5(1) µs

(8+)

213Pb

82

131

212.996581(8)

10.2(3) min

β−

213Bi

(9/2+)

214Pb

Radium B

82

132

213.9998054(26)

26.8(9) min

β−

214Bi

0+

Trace

215Pb

82

133

215.00481(44)

36(1) s

5/2+

 

 

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic
mass (u)

half-life

decay
mode

daughter
isotope

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of
natural
variation
(mole fraction)

excitation energy

184Bi

83

101

184.00112(14)

6.6(15) ms

3+

184mBi

150(100) keV

13(2) ms

10−

185Bi

83

102

184.99763(6)

2 ms

p

184Pb

9/2−

α (rare)

181Tl

185mBi

70(50) keV

49(7) µs

α

181Tl

1/2+

p

184Pb

186Bi

83

103

185.99660(8)

14.8(7) ms

α

182Tl

(3+)

β+ (rare)

186Pb

186mBi

270(140) keV

9.8(4) ms

α

182Tl

(10−)

β+

186Pb

187Bi

83

104

186.993158(16)

32(3) ms

α (50%)

183Tl

9/2−

β+ (50%)

187Pb

187m1Bi

101(20) keV

320(70) µs

1/2+

187m2Bi

252(1) keV

7(5) µs

(13/2+)

188Bi

83

105

187.99227(5)

44(3) ms

α

184Tl

3+

β+ (rare)

188Pb

188mBi

210(140) keV

220(40) ms

α

184Tl

(10−)

β+ (rare)

188Pb

189Bi

83

106

188.98920(6)

674(11) ms

α (51%)

185Tl

(9/2−)

β+ (49%)

189Pb

189m1Bi

181(6) keV

5.0(1) ms

(1/2+)

189m2Bi

357(1) keV

880(50) ns

(13/2+)

190Bi

83

107

189.9883(2)

6.3(1) s

α (77%)

186Tl

(3+)

β+ (30%)

190Pb

190m1Bi

420(180) keV

6.2(1) s

α (70%)

186Tl

(10−)

β+ (23%)

190Pb

190m2Bi

690(180) keV

>500(100) ns

7+

191Bi

83

108

190.985786(8)

12.3(3) s

α (60%)

187Tl

(9/2−)

β+ (40%)

191Pb

191mBi

240(4) keV

124(5) ms

α (75%)

187Tl

(1/2+)

β+ (25%)

191Pb

192Bi

83

109

191.98546(4)

34.6(9) s

β+ (82%)

192Pb

(3+)

α (18%)

188Tl

192mBi

150(30) keV

39.6(4) s

β+ (90.8%)

192Pb

(10−)

α (9.2%)

188Tl

193Bi

83

110

192.98296(1)

67(3) s

β+ (95%)

193Pb

(9/2−)

α (5%)

189Tl

193mBi

308(7) keV

3.2(6) s

α (90%)

189Tl

(1/2+)

β+ (10%)

193Pb

194Bi

83

111

193.98283(5)

95(3) s

β+ (99.54%)

194Pb

(3+)

α (.46%)

190Tl

194m1Bi

110(70) keV

125(2) s

β+

194Pb

(6+,7+)

α (rare)

190Tl

194m2Bi

230(90) keV

115(4) s

(10−)

195Bi

83

112

194.980651(6)

183(4) s

β+ (99.97%)

195Pb

(9/2−)

α (.03%)

191Tl

195m1Bi

399(6) keV

87(1) s

β+ (67%)

195Pb

(1/2+)

α (33%)

191Tl

195m2Bi

2311.4+X keV

750(50) ns

(29/2−)

196Bi

83

113

195.980667(26)

5.1(2) min

β+ (99.99%)

196Pb

(3+)

α (.00115%)

192Tl

196m1Bi

166.6(30) keV

0.6(5) s

IT

196Bi

(7+)

β+

196Pb

196m2Bi

270(3) keV

4.00(5) min

(10−)

197Bi

83

114

196.978864(9)

9.33(50) min

β+ (99.99%)

197Pb

(9/2−)

α (10−4%)

193Tl

197m1Bi

690(110) keV

5.04(16) min

α (55%)

193Tl

(1/2+)

β+ (45%)

197Pb

IT (.3%)

197Bi

197m2Bi

2129.3(4) keV

204(18) ns

(23/2−)

197m3Bi

2360.4(5)+X keV

263(13) ns

(29/2−)

197m4Bi

2383.1(7)+X keV

253(39) ns

(29/2−)

197m5Bi

2929.5(5) keV

209(30) ns

(31/2−)

198Bi

83

115

197.97921(3)

10.3(3) min

β+

198Pb

(2+,3+)

198m1Bi

280(40) keV

11.6(3) min

β+

198Pb

(7+)

198m2Bi

530(40) keV

7.7(5) s

10−

199Bi

83

116

198.977672(13)

27(1) min

β+

199Pb

9/2−

199m1Bi

667(4) keV

24.70(15) min

β+ (98%)

199Pb

(1/2+)

IT (2%)

199Bi

α (.01%)

195Tl

199m2Bi

1947(25) keV

0.10(3) µs

(25/2+)

199m3Bi

~2547.0 keV

168(13) ns

29/2−

200Bi

83

117

199.978132(26)

36.4(5) min

β+

200Pb

7+

200m1Bi

100(70) keV

31(2) min

EC (90%)

200Pb

(2+)

IT (10%)

200Bi

200m2Bi

428.20(10) keV

400(50) ms

(10−)

201Bi

83

118

200.977009(16)

108(3) min

β+ (99.99%)

201Pb

9/2−

α (10−4%)

197Tl

201m1Bi

846.34(21) keV

59.1(6) min

EC (92.9%)

201Pb

1/2+

IT (6.8%)

201Bi

α (.3%)

197Tl

201m2Bi

1932.2+X keV

118(28) ns

(25/2+)

201m3Bi

1971.2+X keV

105(75) ns

(27/2+)

201m4Bi

2739.90(20)+X keV

124(4) ns

(29/2−)

202Bi

83

119

201.977742(22)

1.72(5) h

β+

202Pb

5(+)

α (10−5%)

198Tl

202m1Bi

615(7) keV

3.04(6) µs

(10)−

202m2Bi

2607.1(5) keV

310(50) ns

(17+)

203Bi

83

120

202.976876(23)

11.76(5) h

β+

203Pb

9/2−

α (10−5%)

199Tl

203m1Bi

1098.14(7) keV

303(5) ms

IT

203Bi

1/2+

203m2Bi

2041.5(6) keV

194(30) ns

25/2+

204Bi

83

121

203.977813(28)

11.22(10) h

β+

204Pb

6+

204m1Bi

805.5(3) keV

13.0(1) ms

IT

204Bi

10−

204m2Bi

2833.4(11) keV

1.07(3) ms

(17+)

205Bi

83

122

204.977389(8)

15.31(4) d

β+

205Pb

9/2−

206Bi

83

123

205.978499(8)

6.243(3) d

β+

206Pb

6(+)

206m1Bi

59.897(17) keV

7.7(2) µs

(4+)

206m2Bi

1044.8(5) keV

890(10) µs

(10−)

207Bi

83

124

206.9784707(26)

32.9(14) y

β+

207Pb

9/2−

207mBi

2101.49(16) keV

182(6) µs

21/2+

208Bi

83

125

207.9797422(25)

3.68(4)×105 y

β+

208Pb

(5)+

208mBi

1571.1(4) keV

2.58(4) ms

IT

208Bi

(10)−

209Bi

83

126

208.9803987(16)

1.9(2)×1019 y

α

205Tl

9/2−

1.0000

210Bi

Radium E

83

127

209.9841204(16)

5.012(5) d

β−

210Po

1−

Trace

α (1.32×10−4%)

206Tl

210mBi

271.31(11) keV

3.04(6)×106 y

α

206Tl

9−

211Bi

Actinium C

83

128

210.987269(6)

2.14(2) min

α (99.72%)

207Tl

9/2−

Trace

β− (.276%)

211Po

211mBi

1257(10) keV

1.4(3) µs

(25/2−)

212Bi

Thorium C

83

129

211.9912857(21)

60.55(6) min

β− (64.05%)

212Po

1(−)

Trace

α (35.94%)

208Tl

β−, α (.014%)

208Pb

212m1Bi

250(30) keV

25.0(2) min

α (67%)

208Tl

(9−)

β− (33%)

212mPo

β−, α (.3%)

208Pb

212m2Bi

2200(200) keV

7.0(3) min

>15

213Bi

83

130

212.994385(5)

45.59(6) min

β− (97.91%)

213Po

9/2−

α (2.09%)

209Tl

214Bi

Radium C

83

131

213.998712(12)

19.9(4) min

β− (99.97%)

214Po

1−

Trace

α (.021%)

210Tl

β−, α (.003%)

210Pb

215Bi

83

132

215.001770(16)

7.6(2) min

β−

215Po

(9/2−)

Trace

215mBi

1347.5(25) keV

36.4(25) min

(25/2−)

216Bi

83

133

216.006306(12)

2.17(5) min

β−

216Po

1−

217Bi

83

134

217.00947(21)

98.5(8) s

9/2−

218Bi

83

135

218.01432(39)

33(1) s

1−

 

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

188Po

84

104

187.999422(21)

430(180) µs
[0.40(+20−15) ms]

0+

189Po

84

105

188.998481(24)

5(1) ms

3/2−

190Po

84

106

189.995101(14)

2.46(5) ms

α (99.9%)

186Pb

0+

β+ (.1%)

190Bi

191Po

84

107

190.994574(12)

22(1) ms

α

187Pb

3/2−

β+ (rare)

191Bi

191mPo

130(21) keV

93(3) ms

(13/2+)

192Po

84

108

191.991335(13)

32.2(3) ms

α (99%)

188Pb

0+

β+ (1%)

192Bi

192mPo

2600(500) keV

~1 µs

12+

193Po

84

109

192.99103(4)

420(40) ms
[370(+46−40) ms]

α

189Pb

3/2−

β+ (rare)

193Bi

193mPo

100(30) keV

240(10) ms
[243(+11−10) ms]

α

189Pb

(13/2+)

β+ (rare)

193Bi

194Po

84

110

193.988186(13)

0.392(4) s

α

190Pb

0+

β+ (rare)

194Bi

194mPo

2525(2) keV

15(2) µs

(11−)

195Po

84

111

194.98811(4)

4.64(9) s

α (75%)

191Pb

3/2−

β+ (25%)

195Bi

195mPo

110(50) keV

1.92(2) s

α (90%)

191Pb

13/2+

β+ (10%)

195Bi

IT (.01%)

195Po

196Po

84

112

195.985535(14)

5.56(12) s

α (94%)

192Pb

0+

β+ (6%)

196Bi

196mPo

2490.5(17) keV

850(90) ns

(11−)

197Po

84

113

196.98566(5)

53.6(10) s

β+ (54%)

197Bi

(3/2−)

α (44%)

193Pb

197mPo

230(80) keV

25.8(1) s

α (84%)

193Pb

(13/2+)

β+ (16%)

197Bi

IT (.01%)

197Po

198Po

84

114

197.983389(19)

1.77(3) min

α (57%)

194Pb

0+

β+ (43%)

198Bi

198m1Po

2565.92(20) keV

200(20) ns

11−

198m2Po

2691.86(20) keV

750(50) ns

12+

199Po

84

115

198.983666(25)

5.48(16) min

β+ (92.5%)

199Bi

(3/2−)

α (7.5%)

195Pb

199mPo

312.0(28) keV

4.17(4) min

β+ (73.5%)

199Bi

13/2+

α (24%)

195Pb

IT (2.5%)

199Po

200Po

84

116

199.981799(15)

11.5(1) min

β+ (88.8%)

200Bi

0+

α (11.1%)

196Pb

201Po

84

117

200.982260(6)

15.3(2) min

β+ (98.4%)

201Bi

3/2−

α (1.6%)

197Pb

201mPo

424.1(24) keV

8.9(2) min

IT (56%)

201Po

13/2+

EC (41%)

201Bi

α (2.9%)

197Pb

202Po

84

118

201.980758(16)

44.7(5) min

β+ (98%)

202Bi

0+

α (2%)

198Pb

202mPo

2626.7(7) keV

>200 ns

11−

203Po

84

119

202.981420(28)

36.7(5) min

β+ (99.89%)

203Bi

5/2−

α (.11%)

199Pb

203m1Po

641.49(17) keV

45(2) s

IT (99.96%)

203Po

13/2+

α (.04%)

199Pb

203m2Po

2158.5(6) keV

>200 ns

204Po

84

120

203.980318(12)

3.53(2) h

β+ (99.33%)

204Bi

0+

α (.66%)

200Pb

205Po

84

121

204.981203(21)

1.66(2) h

β+ (99.96%)

205Bi

5/2−

α (.04%)

201Pb

205m1Po

143.166(17) keV

310(60) ns

1/2−

205m2Po

880.30(4) keV

645 µs

13/2+

205m3Po

1461.21(21) keV

57.4(9) ms

IT

205Po

19/2−

205m4Po

3087.2(4) keV

115(10) ns

29/2−

206Po

84

122

205.980481(9)

8.8(1) d

β+ (94.55%)

206Bi

0+

α (5.45%)

202Pb

206m1Po

1585.85(11) keV

222(10) ns

(8+)

206m2Po

2262.22(14) keV

1.05(6) µs

(9−)

207Po

84

123

206.981593(7)

5.80(2) h

β+ (99.97%)

207Bi

5/2−

α (.021%)

203Pb

207m1Po

68.573(14) keV

205(10) ns

1/2−

207m2Po

1115.073(16) keV

49(4) µs

13/2+

207m3Po

1383.15(6) keV

2.79(8) s

IT

207Po

19/2−

208Po

84

124

207.9812457(19)

2.898(2) y

α (99.99%)

204Pb

0+

β+ (.00277%)

208Bi

209Po

84

125

208.9824304(20)

125.2(3.3) y

α (99.52%)

205Pb

1/2−

β+ (.48%)

209Bi

210Po

Radium F

84

126

209.9828737(13)

138.376(2) d

α

206Pb

0+

Trace

210mPo

5057.61(4) keV

263(5) ns

16+

211Po

Actinium C'

84

127

210.9866532(14)

0.516(3) s

α

207Pb

9/2+

Trace

211m1Po

1462(5) keV

25.2(6) s

α (99.98%)

207Pb

(25/2+)

IT (.016%)

211Po

211m2Po

2135.7(9) keV

243(21) ns

(31/2−)

211m3Po

4873.3(17) keV

2.8(7) µs

(43/2+)

212Po

Thorium C'

84

128

211.9888680(13)

299(2) ns

α

208Pb

0+

Trace

212mPo

2911(12) keV

45.1(6) s

α (99.93%)

208Pb

(18+)

IT (.07%)

212Po

213Po

84

129

212.992857(3)

3.65(4) µs

α

209Pb

9/2+

214Po

Radium C'

84

130

213.9952014(16)

164.3(20) µs

α

210Pb

0+

Trace

215Po

Actinium A

84

131

214.9994200(27)

1.781(4) ms

α (99.99%)

211Pb

9/2+

Trace

β− (2.3×10−4%)

215At

216Po

Thorium A

84

132

216.0019150(24)

0.145(2) s

α

212Pb

0+

Trace

β−β− (rare)

216Rn

217Po

84

133

217.006335(7)

1.47(5) s

α (95%)

213Pb

5/2+

β− (5%)

217At

218Po

Radium A

84

134

218.0089730(26)

3.10(1) min

α (99.98%)

214Pb

0+

Trace

β− (.02%)

218At

219Po

84

135

219.01374(39)

9.6 min

α

215Pb

7/2+

β−

219At

220Po

84

136

220.01660(39)

40 s
[>300 ns]

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

191At

85

106

1.7(+11−5) ms

(1/2+)

191mAt

2.1(+4−3) ms

(7/2−)

193At

85

108

192.99984(6)

28(+5−4) ms

α

189Bi

(1/2+)

193m1At

50 keV

21(5) ms

(7/2−)

193m2At

39 keV

27(+4−5) ms

(13/2+)

194At

85

109

193.99873(20)

~40 ms

α

190Bi

3+

β+ (rare)

194Po

194mAt

480(190) keV

~250 ms

α

190Bi

10−

IT (rare)

194At

195At

85

110

194.996268(10)

328(20) ms

α (75%)

191Bi

(1/2+)

β+ (25%)

195Po

195mAt

34(7) keV

147(5) ms

9/2−

196At

85

111

195.99579(6)

253(9) ms

α (96%)

192Bi

3+

β+ (4.0%)

196Po

196m1At

−30(80) keV

20 ms

10−

196m2At

157.9(1) keV

11 µs

5+

197At

85

112

196.99319(5)

0.390(16) s

α (96%)

193Bi

(9/2−)

β+ (4.0%)

197Po

197mAt

52(10) keV

2.0(2) s

(1/2+)

198At

85

113

197.99284(5)

4.2(3) s

α (94%)

194Bi

(3+)

β+ (6%)

198Po

198mAt

330(90) keV

1.0(2) s

(10−)

199At

85

114

198.99053(5)

6.92(13) s

α (89%)

195Bi

(9/2−)

β+ (11%)

199Po

200At

85

115

199.990351(26)

43.2(9) s

α (57%)

196Bi

(3+)

β+ (43%)

200Po

200m1At

112.7(30) keV

47(1) s

α (43%)

196Bi

(7+)

IT

200At

β+

200Po

200m2At

344(3) keV

3.5(2) s

(10−)

201At

85

116

200.988417(9)

85(3) s

α (71%)

197Bi

(9/2−)

β+ (29%)

201Po

202At

85

117

201.98863(3)

184(1) s

β+ (88%)

202Po

(2,3)+

α (12%)

198Bi

202m1At

190(40) keV

182(2) s

(7+)

202m2At

580(40) keV

460(50) ms

(10−)

203At

85

118

202.986942(13)

7.37(13) min

β+ (69%)

203Po

9/2−

α (31%)

199Bi

204At

85

119

203.987251(26)

9.2(2) min

β+ (96%)

204Po

7+

α (3.8%)

200Bi

204mAt

587.30(20) keV

108(10) ms

IT

204At

(10−)

205At

85

120

204.986074(16)

26.2(5) min

β+ (90%)

205Po

9/2−

α (10%)

201Bi

205mAt

2339.65(23) keV

7.76(14) µs

29/2+

206At

85

121

205.986667(22)

30.6(13) min

β+ (99.11%)

206Po

(5)+

α (0.9%)

202Bi

206mAt

807(3) keV

410(80) ns

(10)−

207At

85

122

206.985784(23)

1.80(4) h

β+ (91%)

207Po

9/2−

α (8.6%)

203Bi

208At

85

123

207.986590(28)

1.63(3) h

β+ (99.5%)

208Po

6+

α (0.55%)

204Bi

209At

85

124

208.986173(8)

5.41(5) h

β+ (96%)

209Po

9/2−

α (4.0%)

205Bi

210At

85

125

209.987148(8)

8.1(4) h

β+ (99.8%)

210Po

(5)+

α (0.18%)

206Bi

210m1At

2549.6(2) keV

482(6) µs

(15)−

210m2At

4027.7(2) keV

5.66(7) µs

(19)+

211At

85

126

210.9874963(30)

7.214(7) h

EC (58.2%)

211Po

9/2−

α (42%)

207Bi

212At

85

127

211.990745(8)

0.314(2) s

α (99.95%)

208Bi

(1−)

β+ (0.05%)

212Po

β− (2×10−6%)

212Rn

212m1At

223(7) keV

0.119(3) s

α (99%)

208Bi

(9−)

IT (1%)

212At

212m2At

4771.6(11) keV

152(5) µs

(25−)

213At

85

128

212.992937(5)

125(6) ns

α

209Bi

9/2−

214At

85

129

213.996372(5)

558(10) ns

α

210Bi

1−

214m1At

59(9) keV

265(30) ns

214m2At

231(6) keV

760(15) ns

9−

215At

85

130

214.998653(7)

0.10(2) ms

α

211Bi

9/2−

Trace

216At

85

131

216.002423(4)

0.30(3) ms

α (99.99%)

212Bi

1−

β− (.006%)

216Rn

EC (3×10−7%)

216Po

216mAt

413(5) keV

100 µs

(9−)

217At

85

132

217.004719(5)

32.3(4) ms

α (99.98%)

213Bi

9/2−

β− (.012%)

217Rn

218At

85

133

218.008694(12)

1.5(3) s

α (99.9%)

214Bi

1−

Trace

β− (0.10%)

218Rn

219At

85

134

219.011162(4)

56(3) s

α (97%)

215Bi

5/2−

Trace

β− (3.0%)

219Rn

220At

85

135

220.01541(6)

3.71(4) min

β− (92%)

220Rn

3(−)

α (8.0%)

216Bi

221At

85

136

221.01805(21)

2.3(2) min

β−

221Rn

3/2−

222At

85

137

222.02233(32)

54(10) s

β−

222Rn

223At

85

138

223.02519(43)

50(7) s

3/2−

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

195Rn

86

109

195.00544(5)

6 ms

3/2−

195mRn

50(50) keV

6 ms

13/2+

196Rn

86

110

196.002115(16)

4.7(11) ms
[4.4(+13−9) ms]

α

192Po

0+

β+ (rare)

196At

197Rn

86

111

197.00158(7)

66(16) ms
[65(+23−14) ms]

α

193Po

3/2−

β+ (rare)

197At

197mRn

200(60) keV

21(5) ms
[19(+8−4) ms]

α

193Po

(13/2+)

β+ (rare)

197At

198Rn

86

112

197.998679(14)

65(3) ms

α (99%)

194Po

0+

β+ (1%)

198At

199Rn

86

113

198.99837(7)

620(30) ms

α (94%)

195Po

3/2−

β+ (6%)

199At

199mRn

180(70) keV

320(20) ms

α (97%)

195Po

13/2+

β+ (3%)

199At

200Rn

86

114

199.995699(14)

0.96(3) s

α (98%)

196Po

0+

β+ (2%)

200At

201Rn

86

115

200.99563(8)

7.0(4) s

α (80%)

197Po

(3/2−)

β+ (20%)

201At

201mRn

280(90) keV

3.8(1) s

α (90%)

197Po

(13/2+)

β+ (10%)

201At

IT (<1%)

201Rn

202Rn

86

116

201.993263(19)

9.94(18) s

α (85%)

198Po

0+

β+ (15%)

202At

203Rn

86

117

202.993387(25)

44.2(16) s

α (66%)

199Po

(3/2−)

β+ (34%)

203At

203mRn

363(4) keV

26.7(5) s

α (80%)

199Po

13/2(+)

β+ (20%)

203At

204Rn

86

118

203.991429(16)

1.17(18) min

α (73%)

200Po

0+

β+ (27%)

204At

205Rn

86

119

204.99172(5)

170(4) s

β+ (77%)

205At

5/2−

α (23%)

201Po

206Rn

86

120

205.990214(16)

5.67(17) min

α (62%)

202Po

0+

β+ (38%)

206At

207Rn

86

121

206.990734(28)

9.25(17) min

β+ (79%)

207At

5/2−

α (21%)

203Po

207mRn

899.0(10) keV

181(18) µs

(13/2+)

208Rn

86

122

207.989642(12)

24.35(14) min

α (62%)

204Po

0+

β+ (38%)

208At

209Rn

86

123

208.990415(21)

28.5(10) min

β+ (83%)

209At

5/2−

α (17%)

205Po

209m1Rn

1173.98(13) keV

13.4(13) µs

13/2+

209m2Rn

3636.78(23) keV

3.0(3) µs

(35/2+)

210Rn

86

124

209.989696(9)

2.4(1) h

α (96%)

206Po

0+

β+ (4%)

210At

210m1Rn

1690(15) keV

644(40) ns

8+

210m2Rn

3837(15) keV

1.06(5) µs

(17)−

210m3Rn

6493(15) keV

1.04(7) µs

(22)+

211Rn

86

125

210.990601(7)

14.6(2) h

α (72.6%)

207Po

1/2−

β+ (27.4%)

211At

212Rn

86

126

211.990704(3)

23.9(12) min

α

208Po

0+

β+β+ (rare)

212Po

213Rn

86

127

212.993883(6)

19.5(1) ms

α

209Po

(9/2+)

214Rn

86

128

213.995363(10)

0.27(2) µs

α

210Po

0+

β+β+ (rare)

214Po

214mRn

4595.4 keV

245(30) ns

(22+)

215Rn

86

129

214.998745(8)

2.30(10) µs

α

211Po

9/2+

216Rn

86

130

216.000274(8)

45(5) µs

α

212Po

0+

217Rn

86

131

217.003928(5)

0.54(5) ms

α

213Po

9/2+

218Rn

86

132

218.0056013(25)

35(5) ms

α

214Po

0+

Trace

219Rn

Actinon
Actinium emanation

86

133

219.0094802(27)

3.96(1) s

α

215Po

5/2+

Trace

220Rn

Thoron
Thorium emanation

86

134

220.0113940(24)

55.6(1) s

α

216Po

0+

Trace

β−β− (rare)

220Ra

221Rn

86

135

221.015537(6)

25.7(5) min

β− (78%)

221Fr

7/2(+)

α (22%)

217Po

222Rn

Radon
Radium emanation
Emanation
Emanon
Niton

86

136

222.0175777(25)

3.8235(3) d

α

218Po

0+

Trace

223Rn

86

137

223.02179(32)

24.3(4) min

β−

223Fr

7/2

224Rn

86

138

224.02409(32)

107(3) min

β−

224Fr

0+

225Rn

86

139

225.02844(32)

4.66(4) min

β−

225Fr

7/2−

226Rn

86

140

226.03089(43)

7.4(1) min

β−

226Fr

0+

227Rn

86

141

227.03541(45)

20.8(7) s

β−

227Fr

5/2(+)

228Rn

86

142

228.03799(44)

65(2) s

β−

228Fr

0+

229Rn

86

143

229.0426536(141)

12(1) s

β−

229Fr

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

199Fr

87

112

199.00726(4)

16(7) ms

1/2+

200Fr

87

113

200.00657(8)

24(10) ms

α

196At

3+

200mFr

60(110) keV

650(210) ms

α

196At

10−

IT (rare)

200Fr

201Fr

87

114

201.00386(8)

67(3) ms

α (99%)

197At

(9/2−)

β+ (1%)

201Rn

202Fr

87

115

202.00337(5)

290(30) ms

α (97%)

198At

(3+)

β+ (3%)

202Rn

202mFr

330(90) keV

340(40) ms

α (97%)

198At

(10−)

β+ (3%)

202Rn

203Fr

87

116

203.000925(17)

0.55(2) s

α (95%)

199At

(9/2−)

β+ (5%)

203Rn

204Fr

87

117

204.000653(26)

1.7(3) s

α (96%)

200At

(3+)

β+ (4%)

204Rn

204m1Fr

50(4) keV

2.6(3) s

α (90%)

200At

(7+)

β+ (10%)

204Rn

204m2Fr

326(4) keV

1.7(6) s

(10−)

205Fr

87

118

204.998594(8)

3.80(3) s

α (99%)

201At

(9/2−)

β+ (1%)

205Rn

206Fr

87

119

205.99867(3)

~16 s

β+ (58%)

206Rn

(2+,3+)

α (42%)

202At

206m1Fr

190(40) keV

15.9(1) s

(7+)

206m2Fr

730(40) keV

700(100) ms

(10−)

207Fr

87

120

206.99695(5)

14.8(1) s

α (95%)

203At

9/2−

β+ (5%)

207Rn

208Fr

87

121

207.99714(5)

59.1(3) s

α (90%)

204At

7+

β+ (10%)

208Rn

209Fr

87

122

208.995954(16)

50.0(3) s

α (89%)

205At

9/2−

β+ (11%)

209Rn

210Fr

87

123

209.996408(24)

3.18(6) min

α (60%)

206At

6+

β+ (40%)

210Rn

211Fr

87

124

210.995537(23)

3.10(2) min

α (80%)

207At

9/2−

β+ (20%)

211Rn

212Fr

87

125

211.996202(28)

20.0(6) min

β+ (57%)

212Rn

5+

α (43%)

208At

213Fr

87

126

212.996189(8)

34.6(3) s

α (99.45%)

209At

9/2−

β+ (.55%)

213Rn

214Fr

87

127

213.998971(9)

5.0(2) ms

α

210At

(1−)

214m1Fr

123(6) keV

3.35(5) ms

α

210At

(8−)

214m2Fr

638(6) keV

103(4) ns

(11+)

214m3Fr

6477+Y keV

108(7) ns

(33+)

215Fr

87

128

215.000341(8)

86(5) ns

α

211At

9/2−

216Fr

87

129

216.003198(15)

0.70(2) µs

α

212At

(1−)

β+ (2×10−7%)

216Rn

217Fr

87

130

217.004632(7)

16.8(19) µs

α

213At

9/2−

218Fr

87

131

218.007578(5)

1.0(6) ms

α

214At

1−

218m1Fr

86(4) keV

22.0(5) ms

α

214At

IT (rare)

218Fr

218m2Fr

200(150) keV

high

219Fr

87

132

219.009252(8)

20(2) ms

α

215At

9/2−

220Fr

87

133

220.012327(4)

27.4(3) s

α (99.65%)

216At

1+

β− (.35%)

220Ra

221Fr

87

134

221.014255(5)

4.9(2) min

α (99.9%)

217At

5/2−

β− (.1%)

221Ra

CD (8.79×10−11%)

207Tl
14C

222Fr

87

135

222.017552(23)

14.2(3) min

β−

222Ra

2−

223Fr

Actinium K

87

136

223.0197359(26)

22.00(7) min

β− (99.99%)

223Ra

3/2(−)

Trace

α (.006%)

219At

224Fr

87

137

224.02325(5)

3.33(10) min

β−

224Ra

1−

225Fr

87

138

225.02557(3)

4.0(2) min

β−

225Ra

3/2−

226Fr

87

139

226.02939(11)

49(1) s

β−

226Ra

1−

227Fr

87

140

227.03184(11)

2.47(3) min

β−

227Ra

1/2+

228Fr

87

141

228.03573(22)

38(1) s

β−

228Ra

2−

229Fr

87

142

229.03845(4)

50.2(4) s

β−

229Ra

(1/2+)

230Fr

87

143

230.04251(48)

19.1(5) s

β−

230Ra

231Fr

87

144

231.04544(50)

17.6(6) s

β−

231Ra

(1/2+)

232Fr

87

145

232.04977(69)

5(1) s

β−

232Ra

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

202Ra

88

114

202.00989(7)

2.6(21) ms
[0.7(+33−3) ms]

0+

203Ra

88

115

203.00927(9)

4(3) ms

α

199Rn

(3/2−)

β+ (rare)

203Fr

203mRa

220(90) keV

41(17) ms

α

199Rn

(13/2+)

β+ (rare)

203Fr

204Ra

88

116

204.006500(17)

60(11) ms
[59(+12−9) ms]

α (99.7%)

200Rn

0+

β+ (.3%)

204Fr

205Ra

88

117

205.00627(9)

220(40) ms
[210(+60−40) ms]

α

201Rn

(3/2−)

β+ (rare)

205Fr

205mRa

310(110) keV

180(50) ms
[170(+60−40) ms]

α

201Rn

(13/2+)

IT (rare)

205Ra

206Ra

88

118

206.003827(19)

0.24(2) s

α

202Rn

0+

207Ra

88

119

207.00380(6)

1.3(2) s

α (90%)

203Rn

(5/2−,3/2−)

β+ (10%)

207Fr

207mRa

560(50) keV

57(8) ms

IT (85%)

207Ra

(13/2+)

α (15%)

203Rn

β+ (.55%)

207Fr

208Ra

88

120

208.001840(17)

1.3(2) s

α (95%)

204Rn

0+

β+ (5%)

208Fr

208mRa

1800(200) keV

270 ns

(8+)

209Ra

88

121

209.00199(5)

4.6(2) s

α (90%)

205Rn

5/2−

β+ (10%)

209Fr

210Ra

88

122

210.000495(16)

3.7(2) s

α (96%)

206Rn

0+

β+ (4%)

210Fr

210mRa

1800(200) keV

2.24 µs

(8+)

211Ra

88

123

211.000898(28)

13(2) s

α (97%)

207Rn

5/2(−)

β+ (3%)

211Fr

212Ra

88

124

211.999794(12)

13.0(2) s

α (85%)

208Rn

0+

β+ (15%)

212Fr

212m1Ra

1958.4(5) keV

10.9(4) µs

(8)+

212m2Ra

2613.4(5) keV

0.85(13) µs

(11)−

213Ra

88

125

213.000384(22)

2.74(6) min

α (80%)

209Rn

1/2−

β+ (20%)

213Fr

213mRa

1769(6) keV

2.1(1) ms

IT (99%)

213Ra

17/2−

α (1%)

209Rn

214Ra

88

126

214.000108(10)

2.46(3) s

α (99.94%)

210Rn

0+

β+ (.06%)

214Fr

215Ra

88

127

215.002720(8)

1.55(7) ms

α

211Rn

(9/2+)

215m1Ra

1877.8(5) keV

7.1(2) µs

(25/2+)

215m2Ra

2246.9(5) keV

1.39(7) µs

(29/2−)

215m3Ra

3756.6(6)+X keV

0.555(10) µs

(43/2−)

216Ra

88

128

216.003533(9)

182(10) ns

α

212Rn

0+

EC (1×10−8%)

216Fr

217Ra

88

129

217.006320(9)

1.63(17) µs

α

213Rn

(9/2+)

218Ra

88

130

218.007140(12)

25.2(3) µs

α

214Rn

0+

β+β+ (rare)

218Rn

219Ra

88

131

219.010085(9)

10(3) ms

α

215Rn

(7/2)+

220Ra

88

132

220.011028(10)

17.9(14) ms

α

216Rn

0+

221Ra

88

133

221.013917(5)

28(2) s

α

217Rn

5/2+

CD (1.2×10−10%)

207Pb 14C

222Ra

88

134

222.015375(5)

38.0(5) s

α

218Rn

0+

Trace

CD (3×10−8%)

208Pb 14C

223Ra

Actinium X

88

135

223.0185022(27)

11.43(5) d

α

219Rn

3/2+

Trace

CD (6.4×10−8%)

209Pb
14C

224Ra

Thorium X

88

136

224.0202118(24)

3.6319(23) d

α

220Rn

0+

Trace

CD (4.3×10−9%)

210Pb
14C

225Ra

88

137

225.023612(3)

14.9(2) d

β−

225Ac

1/2+

226Ra

Radium

88

138

226.0254098(25)

1600(7) y

α

222Rn

0+

Trace

β−β− (rare)

226Th

CD (2.6×10−9%)

212Pb
14C

227Ra

88

139

227.0291778(25)

42.2(5) min

β−

227Ac

3/2+

228Ra

Mesothorium 1

88

140

228.0310703(26)

5.75(3) y

β−

228Ac

0+

Trace

229Ra

88

141

229.034958(20)

4.0(2) min

β−

229Ac

5/2(+)

230Ra

88

142

230.037056(13)

93(2) min

β−

230Ac

0+

231Ra

88

143

231.04122(32)

103(3) s

β−

231Ac

(5/2+)

231mRa

66.21(9) keV

~53 µs

(1/2+)

232Ra

88

144

232.04364(30)

250(50) s

β−

232Ac

0+

233Ra

88

145

233.04806(50)

30(5) s

β−

233Ac

1/2+

234Ra

88

146

234.05070(53)

30(10) s

β−

234Ac

0+

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

205Ac

89

116

20(+97−9) ms

α

201Fr

206Ac

89

117

206.01450(8)

25(7) ms

(3+)

206m1Ac

80(50) keV

15(6) ms

206m2Ac

290(110) keV

41(16) ms

(10−)

207Ac

89

118

207.01195(6)

31(8) ms
[27(+11−6) ms]

α

203Fr

9/2−

208Ac

89

119

208.01155(6)

97(16) ms
[95(+24−16) ms]

α (99%)

204Fr

(3+)

β+ (1%)

208Ra

208mAc

506(26) keV

28(7) ms
[25(+9−5) ms]

α (89%)

204Fr

(10−)

IT (10%)

208Ac

β+ (1%)

208Ra

209Ac

89

120

209.00949(5)

92(11) ms

α (99%)

205Fr

(9/2−)

β+ (1%)

209Ra

210Ac

89

121

210.00944(6)

350(40) ms

α (96%)

206Fr

7+

β+ (4%)

210Ra

211Ac

89

122

211.00773(8)

213(25) ms

α (99.8%)

207Fr

9/2−

β+ (.2%)

211Ra

212Ac

89

123

212.00781(7)

920(50) ms

α (97%)

208Fr

6+

β+ (3%)

212Ra

213Ac

89

124

213.00661(6)

731(17) ms

α

209Fr

(9/2−)

β+ (rare)

213Ra

214Ac

89

125

214.006902(24)

8.2(2) s

α (89%)

210Fr

(5+)

β+ (11%)

214Ra

215Ac

89

126

215.006454(23)

0.17(1) s

α (99.91%)

211Fr

9/2−

β+ (.09%)

215Ra

216Ac

89

127

216.008720(29)

0.440(16) ms

α

212Fr

(1−)

β+ (7×10−5%)

216Ra

216mAc

44(7) keV

443(7) µs

(9−)

217Ac

89

128

217.009347(14)

69(4) ns

α (98%)

213Fr

9/2−

β+ (2%)

217Ra

217mAc

2012(20) keV

740(40) ns

(29/2)+

218Ac

89

129

218.01164(5)

1.08(9) µs

α

214Fr

(1−)

218mAc

584(50) keV

103(11) ns

(11+)

219Ac

89

130

219.01242(5)

11.8(15) µs

α

215Fr

9/2−

β+ (10−6%)

219Ra

220Ac

89

131

220.014763(16)

26.36(19) ms

α

216Fr

(3−)

β+ (5×10−4%)

220Ra

221Ac

89

132

221.01559(5)

52(2) ms

α

217Fr

9/2−

222Ac

89

133

222.017844(6)

5.0(5) s

α (99%)

218Fr

1−

β+ (1%)

222Ra

222mAc

200(150) keV

1.05(7) min

α (88.6%)

218Fr

high

IT (10%)

222Ac

β+ (1.4%)

222Ra

223Ac

89

134

223.019137(8)

2.10(5) min

α (99%)

219Fr

(5/2−)

EC (1%)

223Ra

CD (3.2×10−9%)

209Bi 14C

224Ac

89

135

224.021723(4)

2.78(17) h

β+ (90.9%)

224Ra

0−

α (9.1%)

220Fr

β− (1.6%)

224Th

225Ac

89

136

225.023230(5)

10.0(1) d

α

221Fr

(3/2−)

CD (6×10−10%)

211Bi
14C

226Ac

89

137

226.026098(4)

29.37(12) h

β− (83%)

226Th

(1)(−)

EC (17%)

226Ra

α (.006%)

222Fr

227Ac

Actinium

89

138

227.0277521(26)

21.772(3) y

β− (98.61%)

227Th

3/2−

Trace

α (1.38%)

223Fr

228Ac

Mesothorium 2

89

139

228.0310211(27)

6.13(2) h

β−

228Th

3+

Trace

α (5.5×10−6%)

224Fr

229Ac

89

140

229.03302(4)

62.7(5) min

β−

229Th

(3/2+)

230Ac

89

141

230.03629(32)

122(3) s

β−

230Th

(1+)

231Ac

89

142

231.03856(11)

7.5(1) min

β−

231Th

(1/2+)

232Ac

89

143

232.04203(11)

119(5) s

β−

232Th

(1+)

233Ac

89

144

233.04455(32)

145(10) s

β−

233Th

(1/2+)

234Ac

89

145

234.04842(43)

44(7) s

β−

234Th

235Ac

89

146

235.05123(38)

40 s

β−

235Th

1/2+

236Ac

89

147

236.05530(54)

2 min

β−

236Th

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)[35]

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

209Th

90

119

209.01772(11)

7(5) ms
[3.8(+69−15)]

5/2−

210Th

90

120

210.015075(27)

17(11) ms
[9(+17−4) ms]

α

206Ra

0+

β+ (rare)

210Ac

211Th

90

121

211.01493(8)

48(20) ms
[0.04(+3−1) s]

α

207Ra

5/2−

β+ (rare)

211Ac

212Th

90

122

212.01298(2)

36(15) ms
[30(+20-10) ms]

α (99.7%)

208Ra

0+

β+ (.3%)

212Ac

213Th

90

123

213.01301(8)

140(25) ms

α

209Ra

5/2−

β+ (rare)

213Ac

214Th

90

124

214.011500(18)

100(25) ms

α

210Ra

0+

215Th

90

125

215.011730(29)

1.2(2) s

α

211Ra

(1/2−)

216Th

90

126

216.011062(14)

26.8(3) ms

α (99.99%)

212Ra

0+

β+ (.006%)

216Ac

216m1Th

2042(13) keV

137(4) µs

(8+)

216m2Th

2637(20) keV

615(55) ns

(11−)

217Th

90

127

217.013114(22)

240(5) µs

α

213Ra

(9/2+)

218Th

90

128

218.013284(14)

109(13) ns

α

214Ra

0+

219Th

90

129

219.01554(5)

1.05(3) µs

α

215Ra

9/2+

β+ (10−7%)

219Ac

220Th

90

130

220.015748(24)

9.7(6) µs

α

216Ra

0+

EC (2×10−7%)

220Ac

221Th

90

131

221.018184(10)

1.73(3) ms

α

217Ra

(7/2+)

222Th

90

132

222.018468(13)

2.237(13) ms

α

218Ra

0+

EC (1.3×10−8%)

222Ac

223Th

90

133

223.020811(10)

0.60(2) s

α

219Ra

(5/2)+

224Th

90

134

224.021467(12)

1.05(2) s

α

220Ra

0+

β+β+ (rare)

224Ra

225Th

90

135

225.023951(5)

8.72(4) min

α (90%)

221Ra

(3/2)+

EC (10%)

225Ac

226Th

90

136

226.024903(5)

30.57(10) min

α

222Ra

0+

227Th

Radioactinium

90

137

227.0277041(27)

18.68(9) d

α

223Ra

1/2+

Trace

228Th

Radiothorium

90

138

228.0287411(24)

1.9116(16) y

α

224Ra

0+

Trace

CD (1.3×10−11%)

208Pb 20O

229Th

90

139

229.031762(3)

7.34(16)×103 y

α

225Ra

5/2+

229mTh

7.6(5) eV

70(50) h

IT

229Th

3/2+

230Th

Ionium

90

140

230.0331338(19)

7.538(30)×104 y

α

226Ra

0+

0.0002(2)

CD (5.6×10−11%)

206Hg
24Ne

SF (5×10−11%)

(Various)

231Th

Uranium Y

90

141

231.0363043(19)

25.52(1) h

β−

231Pa

5/2+

Trace

α (10−8%)

227Ra

232Th

Thorium

90

142

232.0380553(21)

1.405(6)×1010 y

α

228Ra

0+

0.9998(2)

β−β− (rare)

232U

SF (1.1×10−9%)

(various)

CD (2.78×10−10%)

182Yb
26Ne
24Ne

233Th

90

143

233.0415818(21)

21.83(4) min

β−

233Pa

1/2+

234Th

Uranium X1

90

144

234.043601(4)

24.10(3) d

β−

234mPa

0+

Trace

235Th

90

145

235.04751(5)

7.2(1) min

β−

235Pa

(1/2+)

236Th

90

146

236.04987(21)

37.5(2) min

β−

236Pa

0+

237Th

90

147

237.05389(39)

4.8(5) min

β−

237Pa

5/2+

238Th

90

148

238.0565(3)

9.4(20) min

β−

238Pa

0+

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

212Pa

91

121

212.02320(8)

8(5) ms
[5.1(+61−19) ms]

7+

213Pa

91

122

213.02111(8)

7(3) ms
[5.3(+40−16) ms]

α

209Ac

9/2−

214Pa

91

123

214.02092(8)

17(3) ms

α

210Ac

215Pa

91

124

215.01919(9)

14(2) ms

α

211Ac

9/2−

216Pa

91

125

216.01911(8)

105(12) ms

α (80%)

212Ac

β+ (20%)

216Th

217Pa

91

126

217.01832(6)

3.48(9) ms

α

213Ac

9/2−

217mPa

1860(7) keV

1.08(3) ms

α

213Ac

29/2+

IT (rare)

217Pa

218Pa

91

127

218.020042(26)

0.113(1) ms

α

214Ac

219Pa

91

128

219.01988(6)

53(10) ns

α

215Ac

9/2−

β+ (5×10−9%)

219Th

220Pa

91

129

220.02188(6)

780(160) ns

α

216Ac

1−

221Pa

91

130

221.02188(6)

4.9(8) µs

α

217Ac

9/2−

222Pa

91

131

222.02374(8)

3.2(3) ms

α

218Ac

223Pa

91

132

223.02396(8)

5.1(6) ms

α

219Ac

β+ (.001%)

223Th

224Pa

91

133

224.025626(17)

844(19) ms

α (99.9%)

220Ac

5−

β+ (.1%)

224Th

225Pa

91

134

225.02613(8)

1.7(2) s

α

221Ac

5/2−

226Pa

91

135

226.027948(12)

1.8(2) min

α (74%)

222Ac

β+ (26%)

226Th

227Pa

91

136

227.028805(8)

38.3(3) min

α (85%)

223Ac

(5/2−)

EC (15%)

227Th

228Pa

91

137

228.031051(5)

22(1) h

β+ (98.15%)

228Th

3+

α (1.85%)

224Ac

229Pa

91

138

229.0320968(30)

1.50(5) d

EC (99.52%)

229Th

(5/2+)

α (.48%)

225Ac

229mPa

11.6(3) keV

420(30) ns

3/2−

230Pa

91

139

230.034541(4)

17.4(5) d

β+ (91.6%)

230Th

(2−)

β− (8.4%)

230U

α (.00319%)

226Ac

231Pa

Protoactinium

91

140

231.0358840(24)

3.276(11)×104 y

α

227Ac

3/2−

1.0000

CD (1.34×10−9%)

207Tl
24Ne

SF (3×10−10%)

(various)

CD (10−12%)

208Pb 23F

232Pa

91

141

232.038592(8)

1.31(2) d

β−

232U

(2−)

EC (.003%)

232Th

233Pa

91

142

233.0402473(23)

26.975(13) d

β−

233U

3/2−

234Pa

Uranium Z

91

143

234.043308(5)

6.70(5) h

β−

234U

4+

Trace

SF (3×10−10%)

(various)

234mPa

Uranium X2
Brevium

78(3) keV

1.17(3) min

β− (99.83%)

234U

(0−)

Trace

IT (.16%)

234Pa

SF (10−10%)

(various)

235Pa

91

144

235.04544(5)

24.44(11) min

β−

235U

(3/2−)

236Pa

91

145

236.04868(21)

9.1(1) min

β−

236U

1(−)

β−, SF (6×10−8%)

(various)

237Pa

91

146

237.05115(11)

8.7(2) min

β−

237U

(1/2+)

238Pa

91

147

238.05450(6)

2.27(9) min

β−

238U

(3−)

β−, SF (2.6×10−6%)

(various)

239Pa

91

148

239.05726(21)

1.8(5) h

β−

239U

(3/2)(−)

240Pa

91

149

240.06098(32)

2 min

β−

240U

 

 

nuclide
symbol

historic
name

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

215U

92

123

2.24 ms

α

211Th

5/2−

216U

92

124

4.3 ms

α

212Th

0+

217U

92

125

217.02437(9)

26(14) ms
[16(+21−6) ms]

α

213Th

1/2−

218U

92

126

218.02354(3)

6(5) ms

α

214Th

0+

219U

92

127

219.02492(6)

55(25) µs
[42(+34−13) µs]

α

215Th

9/2+

220U

92

128

220.02472(22)

60 ns

α

216Th

0+

β+ (rare)

220Pa

221U

92

129

221.02640(11)

0.66(14) µs

α

217Th

9/2+

222U

92

130

222.02609(11)

1.4(7) µs
[1.0(+10−4) µs]

α

218Th

0+

β+ (10−6%)

222Pa

223U

92

131

223.02774(8)

21(8) µs
[18(+10−5) µs]

α

219Th

7/2+

224U

92

132

224.027605(27)

940(270) µs

α

220Th

0+

225U

92

133

225.02939

61(4) ms

α

221Th

(5/2+)

226U

92

134

226.029339(14)

269(6) ms

α

222Th

0+

227U

92

135

227.031156(18)

1.1(1) min

α

223Th

(3/2+)

β+ (.001%)

227Pa

228U

92

136

228.031374(16)

9.1(2) min

α (95%)

224Th

0+

EC (5%)

228Pa

229U

92

137

229.033506(6)

58(3) min

β+ (80%)

229Pa

(3/2+)

α (20%)

225Th

230U

92

138

230.033940(5)

20.8 d

α

226Th

0+

SF (1.4×10−10%)

(various)

β+β+ (rare)

230Th

231U

92

139

231.036294(3)

4.2(1) d

EC

231Pa

(5/2)(+)

α (.004%)

227Th

232U

92

140

232.0371562(24)

68.9(4) y

α

228Th

0+

CD (8.9×10−10%)

208Pb 24Ne

CD (5×10−12%)

204Hg 28Mg

SF (10−12%)

(various)

233U

92

141

233.0396352(29)

1.592(2)×105 y

α

229Th

5/2+

SF (6×10−9%)

(various)

CD (7.2×10−11%)

209Pb
24Ne

CD (1.3×10−13%)

205Hg
28Mg

234U

Uranium II

92

142

234.0409521(20)

2.455(6)×105 y

α

230Th

0+

[0.000054(5)]

0.000050–
0.000059

SF (1.73×10−9%)

(various)

CD (1.4×10−11%)

206Hg
28Mg

CD (9×10−12%)

184Hf
26Ne
24Ne

234mU

1421.32(10) keV

33.5(20) ms

6−

235U

Actin Uranium
Actino-Uranium

92

143

235.0439299(20)

7.04(1)×108 y

α

231Th

7/2−

[0.007204(6)]

0.007198–
0.007207

SF (7×10−9%)

(various)

CD (8×10−10%)

186Hf
25Ne
24Ne

235mU

0.0765(4) keV

~26 min

IT

235U

1/2+

236U

Thoruranium

92

144

236.045568(2)

2.342(3)×107 y

α

232Th

0+

SF (9.6×10−8%)

(various)

236m1U

1052.89(19) keV

100(4) ns

(4)−

236m2U

2750(10) keV

120(2) ns

(0+)

237U

92

145

237.0487302(20)

6.75(1) d

β−

237Np

1/2+

238U

Uranium I

92

146

238.0507882(20)

4.468(3)×109 y

α

234Th

0+

[0.992742(10)]

0.992739–
0.992752

SF (5.45×10−5%)

(various)

β−β− (2.19×10−10%)

238Pu

238mU

2557.9(5) keV

280(6) ns

0+

239U

92

147

239.0542933(21)

23.45(2) min

β−

239Np

5/2+

239m1U

20(20) keV

>250 ns

(5/2+)

239m2U

133.7990(10) keV

780(40) ns

1/2+

240U

92

148

240.056592(6)

14.1(1) h

β−

240Np

0+

α (10−10%)

236Th

241U

92

149

241.06033(32)

5 min

β−

241Np

7/2+

242U

92

150

242.06293(22)

16.8(5) min

β−

242Np

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

219Np

93

126

0.15(+0.72-0.07) ms

α

215Pa

(9/2−)

223Np

93

130

2.15(+100-52) µs

α

219Pa

9/2−

225Np

93

132

225.03391(8)

3 ms [>2 µs]

α

221Pa

9/2−

226Np

93

133

226.03515(10)

35(10) ms

α

222Pa

227Np

93

134

227.03496(8)

510(60) ms

α (99.95%)

223Pa

5/2−

β+ (.05%)

227U

228Np

93

135

228.03618(21)

61.4(14) s

β+ (59%)

228U

α (41%)

224Pa

β+, SF (.012%)

(various)

229Np

93

136

229.03626(9)

4.0(2) min

α (51%)

225Pa

5/2+

β+ (49%)

229U

230Np

93

137

230.03783(6)

4.6(3) min

β+ (97%)

230U

α (3%)

226Pa

231Np

93

138

231.03825(5)

48.8(2) min

β+ (98%)

231U

(5/2)(+)

α (2%)

227Pa

232Np

93

139

232.04011(11)

14.7(3) min

β+ (99.99%)

232U

(4+)

α (.003%)

228Pa

233Np

93

140

233.04074(5)

36.2(1) min

β+ (99.99%)

233U

(5/2+)

α (.001%)

229Pa

234Np

93

141

234.042895(9)

4.4(1) d

β+

234U

(0+)

235Np

93

142

235.0440633(21)

396.1(12) d

EC

235U

5/2+

α (.0026%)

231Pa

236Np

93

143

236.04657(5)

1.54(6)×105 y

EC (87.3%)

236U

(6−)

β− (12.5%)

236Pu

α (.16%)

232Pa

236mNp

60(50) keV

22.5(4) h

EC (52%)

236U

1

β− (48%)

236Pu

237Np

93

144

237.0481734(20)

2.144(7)×106 y

α

233Pa

5/2+

SF (2×10−10%)

(various)

CD (4×10−12%)

207Tl
30Mg

238Np

93

145

238.0509464(20)

2.117(2) d

β−

238Pu

2+

238mNp

2300(200) keV

112(39) ns

239Np

93

146

239.0529390(22)

2.356(3) d

β−

239Pu

5/2+

240Np

93

147

240.056162(16)

61.9(2) min

β−

240Pu

(5+)

240mNp

20(15) keV

7.22(2) min

β− (99.89%)

240Pu

1(+)

IT (.11%)

240Np

241Np

93

148

241.05825(8)

13.9(2) min

β−

241Pu

(5/2+)

242Np

93

149

242.06164(21)

2.2(2) min

β−

242Pu

(1+)

242mNp

0(50) keV

5.5(1) min

6+

243Np

93

150

243.06428(3)

1.85(15) min

β−

243Pu

(5/2−)

244Np

93

151

244.06785(32)

2.29(16) min

β−

244Pu

(7−)

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

representative
isotopic
composition
(mole fraction)

range of natural
variation
(mole fraction)

excitation energy

228Pu

94

134

228.03874(3)

1.1(+20−5) s

α (99.9%)

224U

0+

β+ (.1%)

228Np

229Pu

94

135

229.04015(6)

120(50) s

α

225U

3/2+

230Pu

94

136

230.039650(16)

1.70(17) min

α

226U

0+

β+ (rare)

230Np

231Pu

94

137

231.041101(28)

8.6(5) min

β+

231Np

3/2+

α (rare)

227U

232Pu

94

138

232.041187(19)

33.7(5) min

EC (89%)

232Np

0+

α (11%)

228U

233Pu

94

139

233.04300(5)

20.9(4) min

β+ (99.88%)

233Np

5/2+

α (.12%)

229U

234Pu

94

140

234.043317(7)

8.8(1) h

EC (94%)

234Np

0+

α (6%)

230U

235Pu

94

141

235.045286(22)

25.3(5) min

β+ (99.99%)

235Np

(5/2+)

α (.0027%)

231U

236Pu

94

142

236.0460580(24)

2.858(8) y

α

232U

0+

SF (1.37×10−7%)

(various)

CD (2×10−12%)

208Pb 28Mg

β+β+ (rare)

236U

237Pu

94

143

237.0484097(24)

45.2(1) d

EC

237Np

7/2−

α (.0042%)

233U

237m1Pu

145.544(10)2 keV

180(20) ms

IT

237Pu

1/2+

237m2Pu

2900(250) keV

1.1(1) µs

238Pu

94

144

238.0495599(20)

87.7(1) y

α

234U

0+

Trace

SF (1.9×10−7%)

(various)

CD (1.4×10−14%)

206Hg
32Si

CD (6×10−15%)

180Yb
30Mg
28Mg

239Pu

94

145

239.0521634(20)

2.411(3)×104 y

α

235U

1/2+

Trace

SF (3.1×10−10%)

(various)

239m1Pu

391.584(3) keV

193(4) ns

7/2−

239m2Pu

3100(200) keV

7.5(10) µs

(5/2+)

240Pu

94

146

240.0538135(20)

6.561(7)×103 y

α

236U

0+

SF (5.7×10−6%)

(various)

CD (1.3×10−13%)

206Hg
34Si

241Pu

94

147

241.0568515(20)

14.290(6) y

β− (99.99%)

241Am

5/2+

α (.00245%)

237U

SF (2.4×10−14%)

(various)

241m1Pu

161.6(1) keV

0.88(5) µs

1/2+

241m2Pu

2200(200) keV

21(3) µs

242Pu

94

148

242.0587426(20)

3.75(2)×105 y

α

238U

0+

SF (5.5×10−4%)

(various)

243Pu

94

149

243.062003(3)

4.956(3) h

β−

243Am

7/2+

243mPu

383.6(4) keV

330(30) ns

(1/2+)

244Pu

94

150

244.064204(5)

8.00(9)×107 y

α (99.88%)

240U

0+

Trace

SF (.123%)

(various)

β−β− (7.3×10−9%)

244Cm

245Pu

94

151

245.067747(15)

10.5(1) h

β−

245Am

(9/2−)

246Pu

94

152

246.070205(16)

10.84(2) d

β−

246mAm

0+

247Pu

94

153

247.07407(32)

2.27(23) d

β−

247Am

1/2+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

229Am

95

134

3.7 s

α

225Np

230Am

95

135

32(+22-9) s

β+ (64.7%)

230Pu

β+, SF (35.3%)

(various)

232Am

95

137

232.04659(32)

79(2) s

β+ (98%)

232Pu

α (2%)

228Np

β+, SF (.069%)

(various)

233Am

95

138

233.04635(11)

3.2(8) min

β+

233Pu

α

229Np

234Am

95

139

234.04781(22)

2.32(8) min

β+ (99.95%)

234Pu

α (.04%)

230Np

β+, SF (.0066%)

(various)

235Am

95

140

235.04795(13)

9.9(5) min

β+

235Pu

5/2−

α (rare)

231Np

236Am

95

141

236.04958(11)

3.6(1) min

β+

236Pu

α

232Np

237Am

95

142

237.05000(6)

73.0(10) min

β+ (99.97%)

237Pu

5/2(−)

α (.025%)

233Np

238Am

95

143

238.05198(5)

98(2) min

β+

238Pu

1+

α (10−4%)

234Np

238mAm

2500(200) keV

35(10) µs

239Am

95

144

239.0530245(26)

11.9(1) h

EC (99.99%)

239Pu

(5/2)−

α (.01%)

235Np

239mAm

2500(200) keV

163(12) ns

(7/2+)

240Am

95

145

240.055300(15)

50.8(3) h

β+

240Pu

(3−)

α (1.9×10−4%)

236Np

241Am

95

146

241.0568291(20)

432.2(7) y

α

237Np

5/2−

CD (7.4×10−10%)

207Tl, 34Si

SF (4.3×10−10%)

(various)

241mAm

2200(100) keV

1.2(3) µs

242Am

95

147

242.0595492(20)

16.02(2) h

β− (82.7%)

242Cm

1−

EC (17.3%)

242Pu

242m1Am

48.60(5) keV

141(2) y

IT (99.54%)

242Am

5−

α (.46%)

238Np

SF (1.5×10−8%)

(various)

242m2Am

2200(80) keV

14.0(10) ms

(2+,3−)

243Am

95

148

243.0613811(25)

7,370(40) y

α

239Np

5/2−

SF (3.7×10−9%)

(various)

244Am

95

149

244.0642848(22)

10.1(1) h

β−

244Cm

(6−)

244mAm

86.1(10) keV

26(1) min

β− (99.96%)

244Cm

1+

EC (.0361%)

244Pu

245Am

95

150

245.066452(4)

2.05(1) h

β−

245Cm

(5/2)+

246Am

95

151

246.069775(20)

39(3) min

β−

246Cm

(7−)

246m1Am

30(10) keV

25.0(2) min

β− (99.99%)

246Cm

2(−)

IT (.01%)

246Am

246m2Am

~2000 keV

73(10) µs

247Am

95

152

247.07209(11)

23.0(13) min

β−

247Cm

(5/2)

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

232Cm

96

136

1? min

0+

233Cm

96

137

233.05077(8)

1 min

β+

233Am

3/2+

α

229Pu

234Cm

96

138

234.05016(2)

51(12) s

β+

234Am

0+

α

230Pu

235Cm

96

139

235.05143(22)

5 min

β+

235Am

5/2+

α

231Pu

236Cm

96

140

236.05141(22)

10 min

β+

236Am

0+

α

232Pu

237Cm

96

141

237.05290(22)

20 min

β+

237Am

5/2+

α

233Pu

238Cm

96

142

238.05303(4)

2.4(1) h

EC (90%)

238Am

0+

α (10%)

234Pu

239Cm

96

143

239.05496(11)

~2.9 h

β+ (99.9%)

239Am

(7/2−)

α (.1%)

235Pu

240Cm

96

144

240.0555295(25)

27(1) d

α (99.5%)

236Pu

0+

EC (.5%)

240Am

SF (3.9×10−6%)

(various)

241Cm

96

145

241.0576530(23)

32.8(2) d

EC (99%)

241Am

1/2+

α (1%)

237Pu

242Cm

96

146

242.0588358(20)

162.8(2) d

α

238Pu

0+

SF (6.33×10−6%)

(various)

CD (10−14%)

208Pb 34Si

β+β+ (rare)

242Pu

243Cm

96

147

243.0613891(22)

29.1(1) y

α (99.71%)

239Pu

5/2+

EC (.29%)

243Am

SF (5.3×10−9%)

(various)

243mCm

87.4(1) keV

1.08(3) µs

1/2+

244Cm

96

148

244.0627526(20)

18.10(2) y

α

240Pu

0+

SF (1.34×10−4%)

(various)

244mCm

1040.188(12) keV

34(2) ms

IT

244Cm

6+

245Cm

96

149

245.0654912(22)

8.5(1)×103 y

α

241Pu

7/2+

SF (6.1×10−7%)

(various)

245mCm

355.90(10) keV

290(20) ns

1/2+

246Cm

96

150

246.0672237(22)

4.76(4)×103 y

α (99.97%)

242Pu

0+

SF (.0261%)

(various)

247Cm

96

151

247.070354(5)

1.56(5)×107 y

α

243Pu

9/2−

248Cm

96

152

248.072349(5)

3.48(6)×105 y

α (91.74%)

244Pu

0+

SF (8.26%)

(various)

β−β− (rare)

248Cf

249Cm

96

153

249.075953(5)

64.15(3) min

β−

249Bk

1/2(+)

249mCm

48.758(17) keV

23 µs

(7/2+)

250Cm

96

154

250.078357(12)

8,300 y

SF (80%)

(various)

0+

α (11%)

246Pu

β− (9%)

250Bk

251Cm

96

155

251.082285(24)

16.8(2) min

β−

251Bk

(1/2+)

252Cm

96

156

252.08487(32)

<1 d

β−

252Bk

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

233Bk

97

136

21 s

α

229Am

234Bk

97

137

19(+6-4) s

α (50%)

230Am

β+ (50%)

234Cm

236Bk

97

139

236.05733(43)

22(+13-6) s

α

232Am

β+

236Cm

237Bk

97

140

237.05700(24)

1 min

α

233Am

7/2+

β+ (rare)

237Cm

238Bk

97

141

238.05828(31)

2.40(8) min

α

234Am

β+, SF (.048%)

(various)

β+ (rare)

238Cm

239Bk

97

142

239.05828(25)

3 min

α

235Am

7/2+

β+

239Cm

240Bk

97

143

240.05976(16)

4.8(8) min

β+ (90%)

240Cm

α (10%)

236Am

β+, SF (.002%)

(various)

241Bk

97

144

241.06023(22)

4.6(4) min

α

237Am

(7/2+)

β+ (rare)

241Cm

242Bk

97

145

242.06198(22)

7.0(13) min

β+ (99.99%)

242Cm

2−

β+, SF (3×10−4%)

(various)

242mBk

200(200) keV

600(100) ns

243Bk

97

146

243.063008(5)

4.5(2) h

β+ (99.85%)

243Cm

(3/2−)

α (.15%)

239Am

244Bk

97

147

244.065181(16)

4.35(15) h

β+ (99.99%)

244Cm

(4−)

α (.006%)

240Am

245Bk

97

148

245.0663616(25)

4.94(3) d

EC (99.88%)

245Cm

3/2−

α (.12%)

241Am

246Bk

97

149

246.06867(6)

1.80(2) d

β+ (99.8%)

246Cm

2(−)

α (.2%)

242Am

247Bk

97

150

247.070307(6)

1.38(25)×103 y

α

243Am

(3/2−)

SF (rare)

(various)

248Bk

97

151

248.07309(8)

>300 y

α

244Am

6+

248mBk

30(70) keV

23.7(2) h

1(−)

249Bk

97

152

249.0749867(28)

330(4) d

β−

249Cf

7/2+

α (.00145%)

245Am

SF (4.7×10−8%)

(various)

249mBk

8.80(10) keV

300 µs

(3/2−)

250Bk

97

153

250.078317(4)

3.212(5) h

β−

250Cf

2−

250m1Bk

35.59(5) keV

29(1) µs

(4+)

250m2Bk

84.1(21) keV

213(8) µs

(7+)

251Bk

97

154

251.080760(12)

55.6(11) min

β−

251Cf

(3/2−)

α (10−5%)

247Am

251mBk

35.5(13) keV

58(4) µs

(7/2+)

252Bk

97

155

252.08431(22)

1.8(5) min

β−

252Cf

α

248Am

253Bk

97

156

253.08688(39)

10 min

β−

253Cf

254Bk

97

157

254.09060(32)

1 min

β−

254Cf

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

237Cf

98

139

237.06207(54)

2.1(3) s

SF

(various)

5/2+

β+

237Bk

α

233Cm

238Cf

98

140

238.06141(43)

21.1(13) ms

SF

(various)

0+

β+ (rare)

238Bk

α (rare)

234Cm

239Cf

98

141

239.06242(23)

60(30) s
[39(+37−12) s]

α

235Cm

5/2+

β+ (rare)

239Bk

240Cf

98

142

240.06230(22)

1.06(15) min

α (98%)

236Cm

0+

SF (2%)

(various)

β+ (rare)

240Bk

241Cf

98

143

241.06373(27)

3.78(70) min

β+ (75%)

241Bk

7/2−

α (25%)

237Cm

242Cf

98

144

242.06370(4)

3.49(15) min

α (80%)

238Cm

0+

β+ (20%)

242Bk

SF (.014%)

(various)

243Cf

98

145

243.06543(15)

10.7(5) min

β+ (86%)

243Bk

(1/2+)

α (14%)

239Cm

244Cf

98

146

244.066001(3)

19.4(6) min

α (99%)

240Cm

0+

EC (1%)

244Bk

245Cf

98

147

245.068049(3)

45.0(15) min

β+ (64%)

245Bk

(5/2+)

α (36%)

241Cm

246Cf

98

148

246.0688053(22)

35.7(5) h

α

242Cm

0+

EC (5×10−4%)

246Bk

SF (2×10−4%)

(various)

247Cf

98

149

247.071001(9)

3.11(3) h

EC (99.96%)

247Bk

(7/2+)

α (.04%)

243Cm

248Cf

98

150

248.072185(6)

333.5(28) d

α (99.99%)

244Cm

0+

SF (.0029%)

(various)

249Cf

98

151

249.0748535(24)

351(2) y

α

245Cm

9/2−

SF (5×10−7%)

(various)

249mCf

144.98(5) keV

45(5) µs

5/2+

250Cf

98

152

250.0764061(22)

13.08(9) y

α (99.92%)

246Cm

0+

SF (.077%)

(various)

251Cf

98

153

251.079587(5)

900(40) y

α

247Cm

1/2+

252Cf

98

154

252.081626(5)

2.645(8) y

α (96.9%)

248Cm

0+

SF (3.09%)

(various)

253Cf

98

155

253.085133(7)

17.81(8) d

β− (99.69%)

253Es

(7/2+)

α (.31%)

249Cm

254Cf

98

156

254.087323(13)

60.5(2) d

SF (99.69%)

(various)

0+

α (.31%)

250Cm

β−β− (rare)

254Fm

255Cf

98

157

255.09105(22)

85(18) min

β− (99.99%)

255Es

(7/2+)

SF (.001%)

(various)

α (10−5%)

251Cm

256Cf

98

158

256.09344(32)

12.3(12) min

SF (~100%)

(various)

0+

α (10−6%)

252Cm

β−β− (rare)

256Fm

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

240Es

99

141

240.06892(43)

6(2) s

α

236Bk

β+ (rare)

240Cf

241Es

99

142

241.06854(24)

10(5) s
[8(+6−5) s]

α

237Bk

(3/2−)

β+ (rare)

241Cf

242Es

99

143

242.06975(35)

13.5(25) s

α (99.94%)

238Bk

β+, SF (.6%)

(various)

β+ (rare)

242Cf

243Es

99

144

243.06955(25)

21(2) s

β+ (70%)

243Cf

3/2−

α (30%)

239Bk

244Es

99

145

244.07088(20)

37(4) s

β+ (94.69%)

244Cf

α (5.3%)

240Bk

β+, SF (.01%)

(various)

245Es

99

146

245.07132(22)

1.1(1) min

β+ (60%)

245Cf

(3/2−)

α (40%)

241Bk

246Es

99

147

246.07290(24)

7.7(5) min

β+ (90.1%)

246Cf

4−

α (9.9%)

242Bk

β+, SF (.003%)

(various)

247Es

99

148

247.07366(3)

4.55(26) min

β+ (93%)

247Cf

7/2+

α (7%)

243Bk

SF (9×10−5%)

(various)

248Es

99

149

248.07547(6)

27(5) min

β+ (99.75%)

248Cf

2−,0+

α (.25%)

244Bk

β+, SF (3×10−5%)

(various)

249Es

99

150

249.07641(3)

102.2(6) min

β+ (99.43%)

249Cf

7/2+

α (.57%)

245Bk

250Es

99

151

250.07861(11)

8.6(1) h

β+ (97%)

250Cf

(6+)

α (3%)

246Bk

250mEs

200(150) keV

2.22(5) h

EC (99%)

250Cf

1(−)

α (1%)

246Bk

251Es

99

152

251.079992(7)

33(1) h

EC (99.51%)

251Cf

(3/2−)

α (.49%)

247Bk

252Es

99

153

252.08298(5)

471.7(19) d

α (76%)

248Bk

(5−)

EC (24%)

252Cf

β− (.01%)

252Fm

253Es

99

154

253.0848247(28)

20.47(3) d

α

249Bk

7/2+

SF (8.7×10−6%)

(various)

254Es

99

155

254.088022(5)

275.7(5) d

α

250Bk

(7+)

EC (10−4%)

254Cf

SF (3×10−6%)

(various)

β− (1.74×10−6%)

254Fm

254mEs

84.2(25) keV

39.3(2) h

β− (98%)

254Fm

2+

IT (3%)

254Es

α (.33%)

250Bk

EC (.078%)

254Cf

SF (.0045%)

(various)

255Es

99

156

255.090273(12)

39.8(12) d

β− (92%)

255Fm

(7/2+)

α (8%)

251Bk

SF (.0041%)

(various)

256Es

99

157

256.09360(11)

25.4(24) min

β−

256Fm

(1+,0−)

256mEs

0(100) keV

7.6 h

β− (99.99%)

256Fm

(8+)

β−, SF (.002%)

(various)

257Es

99

158

257.09598(44)

7.7(2) d

β−

257Fm

7/2+

α

253Bk

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

241Fm

100

141

241.07421(32)

730(60) µs

SF(>78%)

(various)

5/2+

α (<14%)

237Cf

242Fm

100

142

242.07343(43)

0.8(2) ms

SF

(various)

0+

α (rare)

238Cf

243Fm

100

143

243.07447(23)

231(9) ms

α (91%)

239Cf

7/2−

SF (9%)

(various)

β+ (rare)

243Es

244Fm

100

144

244.07404(22)

3.12(8) ms

SF (99%)

(various)

0+

α (1%)

240Cf

245Fm

100

145

245.07535(21)

4.2(13) s

α (95.7%)

241Cf

1/2+

β+ (4.2%)

245Es

SF (.13%)

(various)

246Fm

100

146

246.075350(17)

1.54(4) s

α (85%)

242Cf

0+

β+ (10%)

246Es

β+, SF (10%)

(various)

SF (4.5%)

(various)

247Fm

100

147

247.07695(12)

31(1) s

α (>50%)

243Cf

(7/2+)

β+ (<50%)

247Es

248Fm

100

148

248.077186(9)

35.1(8) s

α (93%)

244Cf

0+

β+ (7%)

248Es

SF (.10%)

(various)

249Fm

100

149

249.078928(7)

1.6(1) min

β+ (85%)

249Es

(7/2+)

α (15%)

245Cf

250Fm

100

150

250.079521(9)

30.4(15) min

α (90%)

246Cf

0+

EC (10%)

250Es

SF (6.9×10−3%)

(various)

250mFm

1199.2(10) keV

1.92(5) s

IT

250Fm

(8−)

251Fm

100

151

251.081540(16)

5.30(8) h

β+ (98.2%)

251Es

(9/2−)

α (1.8%)

247Cf

251mFm

200.09(11) keV

21.1(16) µs

(5/2+)

252Fm

100

152

252.082467(6)

25.39(4) h

α (99.99%)

248Cf

0+

SF (.0023%)

(various)

β+β+ (rare)

252Cf

253Fm

100

153

253.085185(4)

3.00(12) d

EC (88%)

253Es

(1/2)+

α (12%)

249Cf

254Fm

100

154

254.0868544(30)

3.240(2) h

α (99.94%)

250Cf

0+

SF (.0592%)

(various)

255Fm

100

155

255.089964(5)

20.07(7) h

α

251Cf

7/2+

SF (2.4×10−5%)

(various)

256Fm

100

156

256.091774(8)

157.6(13) min

SF (91.9%)

(various)

0+

α (8.1%)

252Cf

257Fm

100

157

257.095106(7)

100.5(2) d

α (99.79%)

253Cf

(9/2+)

SF (.21%)

(various)

258Fm

100

158

258.09708(22)

370(14) µs

SF

(various)

0+

259Fm

100

159

259.1006(3)

1.5(3) s

SF

(various)

3/2+

260Fm

100

160

260.10281(55)

4 ms

SF

(various)

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

245Md

101

144

245.08081(33)

0.90(25) ms

SF

(various)

(1/2−)

α (rare)

241Es

245mMd

200(100) keV

400(200) ms
[0.35(+23−16) s]

α

241Es

(7/2+)

β+ (rare)

245Fm

246Md

101

145

246.08171(28)

1.0(4) s

α

242Es

β+ (rare)

246Fm

247Md

101

146

247.08152(22)

1.12(22) s

SF

(various)

1/2−

α (rare)

243Es

247mMd

~0.2 s

α (99.99%)

243Es

SF (10−4%)

(various)

248Md

101

147

248.08282(26)

7(3) s

β+ (80%)

248Fm

α (20%)

244Es

β+, SF (.05%)

(various)

249Md

101

148

249.08291(22)

24(4) s

α (60%)

245Es

(7/2−)

β+ (40%)

249Fm

249mMd

100(100) keV

1.9(9) s

(1/2−)

250Md

101

149

250.08442(32)

52(6) s

β+ (93%)

250Fm

α (7%)

246Es

β+, SF (.02%)

(various)

251Md

101

150

251.084774(20)

4.0(5) min

β+ (90%)

251Fm

7/2−

α (10%)

247Es

252Md

101

151

252.08643(14)

2.3(8) min

β+ (50%)

252Fm

α (50%)

248Es

253Md

101

152

253.08714(3)

12(8) min
[6(+12−3) min]

β+

253Fm

7/2−

α

249Es

254Md

101

153

254.08959(11)

10(3) min

β+

254Fm

(0−)

α (rare)

250Es

254mMd

50(100) keV

28(8) min

β+

254Fm

(3−)

α (rare)

250Es

255Md

101

154

255.091084(7)

27(2) min

β+ (92%)

255Fm

(7/2−)

α (8%)

251Es

SF (.15%)

(various)

256Md

101

155

256.09389(13)

77(2) min

β+ (89%)

256Fm

(1−)

α (11%)

252Es

257Md

101

156

257.0955424(29)

5.52(5) h

EC (84.8%)

257Fm

(7/2−)

α (15.2%)

253Es

SF (1%)

(various)

258Md

101

157

258.098431(5)

51.5(3) d

α (99.99%)

254Es

(8−)

β− (.0015%)

258No

β+ (.0015%)

258Fm

258mMd

0(200) keV

57.0(9) min

EC (70%)

258Fm

1−

SF (20%)

(various)

β− (10%)

258No

α (1.2%)

254Es

259Md

101

158

259.10051(22)

1.60(6) h

SF (98.7%)

(various)

7/2−

α (1.3%)

255Es

260Md

101

159

260.10365(34)

27.8(8) d

SF (85%)

(various)

α (5%)

256Es

EC (5%)

260Fm

β− (3.5%)

260No

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

250No

102

148

250.08756(22)

5.7(8) µs

SF (99.95%)

(various)

0+

α (.05%)

246Fm

β+ (2.5×10−4%)

250Md

251No

102

149

251.08894(12)

0.78(2) s

α (89%)

247Fm

7/2+

SF (10%)

(various)

β+ (1%)

251Md

251mNo

110(180) keV

1.7(10) s

9/2−

252No

102

150

252.088967(10)

2.27(14) s

α (73.09%)

248Fm

0+

SF (26.9%)

(various)

β+ (1%)

252Md

253No

102

151

253.090564(7)

1.62(15) min

α (80%)

249Fm

(9/2−)

β+ (20%)

253Md

SF (10−3%)

(various)

253mNo

129(19) keV

31 µs

5/2+

254No

102

152

254.090956(11)

51(10) s

α (89.3%)

250Fm

0+

β+ (10%)

254Md

SF (.31%)

(various)

254mNo

500(100) keV

0.28(4) s

IT (80%)

254No

0+

α (20%)

250Fm

255No

102

153

255.093191(16)

3.1(2) min

α (61.4%)

251Fm

(1/2+)

β+ (38.6%)

255Md

256No

102

154

256.094283(8)

2.91(5) s

α (99.44%)

252Fm

0+

SF (.55%)

(various)

EC (.01%)

256Md

257No

102

155

257.096888(7)

25(2) s

α (99%)

253Fm

(7/2+)

β+ (1%)

257Md

258No

102

156

258.09821(11)

1.2(2) ms

SF (99.99%)

(various)

0+

α (.01%)

254Fm

β+β+ (rare)

258Fm

259No

102

157

259.10103(11)

58(5) min

α (75%)

255Fm

(9/2+)

EC (25%)

259Md

SF (<10%)

(various)

260No

102

158

260.10264(22)

106(8) ms

SF

(various)

0+

262No

102

160

262.10746(39)

~5 ms

SF

(various)

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

252Lr

103

149

252.09526(26)

390(90) ms
[0.36(+11−7) s]

α (90%)

248Md

β+ (10%)

252No

SF (1%)

(various)

253Lr

103

150

253.09509(22)

580(70) ms
[0.57(+7−6) s]

α (90%)

249Md

(7/2−)

SF (9%)

(various)

β+ (1%)

253No

253mLr

30(100) keV

1.5(3) s
[1.5(+3−2) s]

(1/2−)

254Lr

103

151

254.09648(32)

13(3) s

α (78%)

250Md

β+ (22%)

254No

SF (.1%)

(various)

255Lr

103

152

255.096562(19)

22(4) s

α (69%)

251Md

7/2−

β+ (30%)

255No

SF (1%)

(various)

256Lr

103

153

256.09849(9)

27(3) s

α (80%)

252Md

β+ (20%)

256No

SF (.01%)

(various)

257Lr

103

154

257.09942(5)

646(25) ms

α (99.99%)

253Md

9/2+

β+ (.01%)

257No

SF (.001%)

(various)

258Lr

103

155

258.10176(11)

4.1(3) s

α (95%)

254Md

β+ (5%)

258No

259Lr

103

156

259.10290(8)

6.2(3) s

α (77%)

255Md

9/2+

SF (23%)

(various)

β+ (.5%)

259No

260Lr

103

157

260.10551(13)

2.7 min

α (75%)

256Md

β+ (15%)

260No

SF (10%)

(various)

261Lr

103

158

261.10688(22)

44 min

SF

(various)

α (rare)

257Md

262Lr

103

159

262.10961(22)

216 min

β+

262No

α (rare)

258Md

266Lr

103

163

266.11983(56)

11 h

SF

(various)

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

253Rf

104

149

253.10044(44)

13(5) ms

SF (51%)

(various)

(7/2)(+)

α (49%)

249No

253mRf

200(150) keV

52(14) µs
[48(+17−10) µs]

SF

(various)

(1/2)(−)

254Rf

104

150

254.10005(30)

23(3) µs

SF (99.7%)

(various)

0+

α (.3%)

250No

255Rf

104

151

255.10127(12)

1.64(11) s

SF (52%)

(various)

(9/2−)

α (48%)

251No

256Rf

104

152

256.101152(19)

6.45(14) ms

SF (96%)

(various)

0+

α (6%)

252No

257Rf

104

153

257.102918(12)

4.7(3) s

α (79%)

253No

(1/2+)

β+ (18%)

257Lr

SF (2.4%)

(various)

257mRf

114(17) keV

3.9(4) s

(11/2−)

258Rf

104

154

258.10343(3)

12(2) ms

SF (87%)

(various)

0+

α (13%)

254No

259Rf

104

155

259.10560(8)

2.8(4) s

α (93%)

255No

7/2+

SF (7%)

(various)

β+ (.3%)

259Lr

260Rf

104

156

260.10644(22)

21(1) ms

SF (98%)

(various)

0+

α (2%)

256No

261Rf

104

157

261.10877(5)

68 s

α (76%)

257No

9/2+

β+ (14%)

261Lr

SF (10%)

(various)

261mRf

70(100) keV

1.9(4) s

SF (73%)

(various)

3/2+

α (27%)

257No

262Rf

104

158

262.10993(24)

2.3(4) s

SF (99.2%)

(various)

0+

α (.8%)

258No

262mRf

600(400) keV

47(5) ms

SF

(various)

high

263Rf

104

159

263.1125(2)

11(3) min

SF (70%)

(various)

3/2+

α (30%)

259No

265Rf

104

161

265.11668(39)

1.0 min

SF

(various)

266Rf

104

162

266.11817(50)

23 s

SF

(various)

0+

267Rf

104

163

267.12179(62)

1.3 h

SF

(various)

13/2−

268Rf

104

164

268.12397(77)

1.4 s

SF

(various)

0+

270Rf

104

166

20 ms

SF

(various)

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

255Db

105

150

255.10707(45)

1.7(5) s

α (~80%)

251Lr

SF (~20%)

(various)

256Db

105

151

256.10789(26)

1.9(4) s
[1.6(+5−3) s]

α (~64%)

252Lr

SF (~0.02%)

(various)

β+ (~36%)

256Rf

257Db

105

152

257.10758(22)

1.53(17) s
[1.50(+19−15) s]

α (>94%)

253Lr

(9/2+)

SF (<6%)

(various)

β+ (1%)

257Rf

257mDb

140(100) keV

0.67(6) s

α (>87%)

253Lr

(1/2−)

SF (<13%)

(various)

β+ (1%)

257Rf

258Db

105

153

258.10929(33)

4.5(4) s

α (64%)

254Lr

β+ (36%)

258Rf

SF (<1%)

(various)

258mDb

60(100) keV

1.9(5) s

β+

258Rf

IT (rare)

258Db

259Db

105

154

259.10949(6)

0.51(16) s

α

255Lr

260Db

105

155

260.1113(1)

1.52(13) s

α (>90.4%)

256Lr

SF (<9.6%)

(various)

β+ (<2.5%)

260Rf

260mDb

200(150) keV

19 s

261Db

105

156

261.11192(12)

4.5(1.1) s

SF (73%)

(various)

α (27%)

257Lr

262Db

105

157

262.11407(15)

35(5) s

SF (~67%)

(various)

α (~30%)

258Lr

β+ (3%)

262Rf

263Db

105

158

263.11499(18)

29(9) s
[27(+10−7) s]

SF (~56%)

(various)

α (~37%)

259Lr

β+ (~6.9%)

263Rf

266Db

105

161

266.12103(30)

80(70) min

SF

(various)

EC

266Rf

267Db

105

162

267.12247(44)

4.6(3.7) h

SF

(various)

EC

267Rf

268Db

105

163

268.12567(57)

30.8(5.0) h

SF (~100%)

(various)

EC

268Rf

270Db

105

165

270.13136(64)

1.0 (+1.5−0.4) h

SF (17%)

(various)

α (83%)

266Lr

EC

270Rf

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

258Sg

106

152

258.11298(44)

3.3(10) ms
[2.9(+13−7) ms]

SF

(various)

0+

259Sg

106

153

259.11440(13)

580(210) ms
[0.48(+28−13) s]

α

255Rf

1/2+

260Sg

106

154

260.114384(22)

3.8(8) ms

SF (74%)

(various)

0+

α (26%)

256Rf

261Sg

106

155

261.115949(20)

230(60) ms

α (98.1%)

257Rf

7/2+

EC (1.3%)

261Db

SF (.6%)

(various)

261mSg

92 µs

IC

261Sg

262Sg

106

156

262.11634(4)

8(3) ms
[6.9(+38−18) ms]

SF (92%)

(various)

0+

α (8%)

258Rf

263Sg

106

157

263.11829(10)

1.0(2) s

α

259Rf

9/2+

263mSg

100(70) keV

120 ms

α (87%)

259Rf

3/2+

SF (13%)

(various)

264Sg

106

158

264.11893(30)

37 ms

SF

(various)

0+

265aSg

106

159

265.12109(13)

8(3) s

α

261Rf

265bSg

16.2 s

α

261Rf

266Sg

106

160

266.12198(26)

360 ms

SF

(various)

0+

267Sg

106

161

267.12436(30)

1.4 min

SF (83%)

(various)

α (17%)

263Rf

269Sg

106

163

269.12863(39)

3.1 min

α

265Rf

271Sg

106

165

271.13393(63)

2.4 min

α (67%)

267Rf

3/2+

SF (33%)

(various)

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

260Bh

107

153

260.12166(26)

41(14) ms

α

256Db

261Bh

107

154

261.12146(22)

12.8(3.2) ms

α (95%?)

257Db

(5/2−)

SF (5%?)

(various)

262Bh

107

155

262.12297(33)

84(11) ms

α (80%)

258Db

SF (20%)

(various)

262mBh

220(50) keV

9.5(1.6) ms

α (70%)

258Db

SF (30%)

(various)

264Bh

107

157

264.12459(19)

1.07(21) s

α (86%)

260Db

SF (14%)

(various)

265Bh

107

158

265.12491(25)

1.19(52) s

α

261Db

266Bh

107

159

266.12679(18)

2.5(1.6) s

α

262Db

267Bh

107

160

267.12750(28)

22(10) s
[17(+14−6) s]

α

263Db

270Bh

107

163

270.13336(31)

61 s

α

266Db

271Bh

107

164

271.13526(48)

1.5 s

α

267Db

272Bh

107

165

272.13826(58)

8.8(2.1) s

α

268Db

274Bh

107

167

274.14355(65)

0.9 min

α

270Db

278Bh

107

171

11.5 min?

SF

(various)

 

 

nuclide
symbol

Z(p)

N(n)

Isotopic mass (u)

Half-life

Decay
mode(s)

Daughter
isotope(s)

Nuclear
spin and
parity

Excitation energy

263Hs

108

155

263.12856(37)[a]

760(40) µs

α

259Sg

7/2+[a]

264Hs

108

156

264.12836(3)

540(300) µs

α (50%)

260Sg

0+

SF[b] (50%)

(various)

265Hs

108

157

265.129793(26)

1.96(0.16) ms

α

261Sg

9/2+[a]

265mHs

300(70) keV

360(150) µs

α

261Sg

3/2+[a]

266Hs[c]

108

158

266.13005(4)

3.02(0.54) ms

α (68%)

262Sg

0+

SF (32%)

(various)

266mHs

1100(70) keV

280(220) ms

α

262Sg

9-[a]

267Hs

108

159

267.13167(10)[a]

55(11) ms

α

263Sg

5/2+[a]

267mHs[d]

39(24) keV

990(90) µs

α

263Sg

268Hs

108

160

268.13187(30)[a]

1.42(1.13) s

α

264Sg

0+

269Hs[e]

108

161

269.13375(13)[a]

27(17) s

α

265Sg

9/2+[a]

270Hs

108

162

270.13429(27)[a]

3.6(+8-14) s

α

266Sg

0+

271Hs

108

163

271.13717(32)[a]

~4 s

α

267Sg

273Hs[f]

108

165

273.14168(40)[a]

760 ms

α

269Sg

3/2+[a]

275Hs[g]

108

167

275.14667(63)[a]

290(150) ms

α

271Sg

277Hs[h]

108

169

277.15190(58)[a]

11(9) ms

SF[b]

(various)

3/2+[a]

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

266Mt

109

157

266.13737(33)

1.2(4) ms

α

262Bh

268Mt

109

159

268.13865(25)

21(+8−5) ms

α

264Bh

5+,6+

268mMt

0+X keV

0.07(+10−3) s

α

264Bh

270Mt

109

161

270.14033(18)

0.57 s

α

266Bh

270mMt

1.1 s?

α

266Bh

274Mt

109

165

274.14725(38)

0.45 s

α

270Bh

275Mt

109

166

275.14882(50)

9.7(+460−44) ms

α

271Bh

276Mt

109

167

276.15159(59)

0.72(+87-25) s

α

272Bh

277Mt

109

168

277.15327(82)

~5 ms

SF

(various)

278Mt

109

169

278.15631(68)

7.6 s

α

274Bh

282Mt

109

173

67 s?

α

278Bh

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

267Ds

110

157

267.14377(15)

3(+6−2) µs

α ?

263Hs ?

9/2+

269Ds

110

159

269.14475(3)

230(110) µs
[179(+245−66) µs]

α

265Hs

3/2+

270Ds

110

160

270.14458(5)

160(100) µs
[0.10(+14−4) ms]

α

266Hs

0+

270mDs

1140(70) keV

10(6) ms
[6.0(+82−22) ms]

α

266Hs

(10)(−)

271Ds

110

161

271.14595(10)

210(170) ms

α

267Hs

11/2−

271mDs

29(29) keV

1.3(5) ms

α

267Hs

9/2+

273Ds

110

163

273.14856(14)

0.17(+17−6) ms

α

269Hs

13/2−

277Ds

110

167

277.15591(41)

4.1 ms

α

273Hs

11/2+

279Ds

110

169

279.16010(64)

0.18(+5−3) s

SF (90%)

(various)

α (10%)

275Hs

280Ds

110

170

280.16131(89)

6.7 ms

SF

(various)

0+

281Ds

110

171

281.16451(59)

9.6 s

SF (94%)

(various)

3/2+

α (6%)

277Hs

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

272Rg

111

161

272.15327(25)

2.0(8) ms
[3.8(+14−8) ms]

α

268Mt

5+,6+

274Rg

111

163

274.15525(19)

6.4(+307−29) ms

α

270Mt

278Rg

111

167

278.16149(38)

4.2(+75−17) ms

α

274Mt

279Rg

111

168

279.16272(51)

0.17(+81−8) s

α

275Mt

280Rg

111

169

280.16514(61)

3.6(+43−13) s

α (87%)

276Mt

EC (13%)

280Ds

281Rg

111

170

281.16636(89)

17 (+6−3) s

SF (90%)

(various)

α (10%)

277Mt

282Rg

111

171

282.16912(72)

2.1 (+1.4-0.6) min

α

278Mt

283Rg

111

172

283.17054(79)

5.1 min?

SF

(various)

286Rg

111

175

10.7 min?

α

282Mt

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

277Cn

112

165

277.16364(15)

1.1(7) ms
[0.69(+69−24) ms]

α

273Ds

3/2+

281Cn

112

169

281.16975(42)

130 ms

α

277Ds

3/2+

282Cn

112

170

282.1705(7)

0.8 ms

SF

(various)

0+

283Cn

112

171

283.17327(65)

4 s

α (90%)

279Ds

SF (10%)

(various)

EC?

283Rg

284Cn

112

172

284.17416(91)

97 ms

SF

(various)

0+

α

280Ds

285Cn

112

173

285.17712(60)

29 s

α

281Ds

5/2+

286Cn

112

174

8.45 s

SF

(various)

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay
mode(s)

daughter
isotope(s)

nuclear
spin and
parity

278Nh

113

165

278.17058(20)

1.4 ms

α

274Rg

282Nh

113

169

282.17567(39)

73 ms

α

278Rg

283Nh

113

170

283.17657(52)

75 ms

α

279Rg

284Nh

113

171

284.17873(62)

0.91 s

α (96.8%)

280Rg

EC (3.2%)

284Cn

285Nh

113

172

285.17973(89)

4.2 s

α

281Rg

286Nh

113

173

286.18221(72)

9.5 s

α

282Rg

287Nh

113

174

287.18339(81)

5.5 s

α

283Rg

290Nh

113

177

2 s?

α

286Rg

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

excitation energy

284Fl

114

170

2.5 ms

SF

(variable)

0+

285Fl

114

171

285.18364(47)

150 ms

α

281Cn

3/2+

286Fl

114

172

286.18424(71)

130 ms

SF (60%)

(variable)

0+

α (40%)

282Cn

287Fl

114

173

287.18678(66)

510(+180-100) ms

α

283Cn

EC?

287Nh

288Fl

114

174

288.18757(91)

0.8(+27−16) s

α

284Cn

0+

289Fl

114

175

289.19042(60)

2.6(+12−7) s

α

285Cn

5/2+

290Fl

114

176

19 s?

EC

290Nh

0+

α

286Cn

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

287Mc

115

172

287.19070(52)

32(+155−14) ms

α

283Nh

288Mc

115

173

288.19274(62)

87(+105−30) ms

α

284Nh

289Mc

115

174

289.19363(89)

220 ms

α

285Nh

290Mc

115

175

290.19598(73)

16 ms

α

286Nh

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

290Lv

116

174

290.19864(71)

15(+26−6) ms

α

286Fl

0+

291Lv

116

175

291.20108(66)

6.3(+116−25) ms

α

287Fl

292Lv

116

176

292.20174(91)

18.0(+16−6) ms

α

288Fl

0+

293Lv

116

177

293.20449(60)

53(+62−19) ms

α

289Fl

294Lv

116

178

54 ms

α ?

290Fl

0+

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

293Ts

117

176

293.20824(89)

22 (+8−4) ms

α

289Mc

294Ts

117

177

294.21046(74)

51 (+41−16) ms

α

290Mc

 

 

nuclide
symbol

Z(p)

N(n)

isotopic mass (u)

half-life

decay mode(s)

daughter
isotope(s)

nuclear
spin and
parity

294Og

118

176

294.21392(71)

0.7 ms

α

290Lv

0+

SF

(various)

295Og

118

177

295.21624(69)

181 ms

α

291Lv