Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

²¹⁷U

217.024369 (93)

26

ms

22,699 (87)

7,635.0 (4)

A

?

²¹⁸U

218.023536 (33)

6

ms

21,923 (31)

7,640.6 (1.4)

A

100

²¹⁹U

219.024919 (61)

55

us

23,212 (57)

7,636.7 (2.6)

A

100

²²⁰U

220.02472 (22)

60

ns

23,030 (200)

7,639 (1)

A ?

²²¹U

221.02640 (11)

700

ns

24,590 (100)

7,634 (0)

A ?

²²²U

222.02609 (11)

1.4

us

24,300 (100)

7,638 (0)

A

100

²²³U

223.027739 (76)

21

us

25,838 (71)

7,632.7 (3.2)

A~100

²²⁴U

224.027605 (27)

940

us

25,714 (25)

7,635.2 (1.1)

A

100

²²⁵U

225.029391 (12)

61

ms

27,377 (12)

7,629.75 (5.1)

A

100

²²⁶U

226.029339 (14)

269

ms

27,329 (13)

7,631.92 (5.8)

A

100

²²⁷U

227.031156 (18)

1.1

m

29,022 (17)

7,626.39 (7.4)

A

100

²²⁸U

228.031374 (16)

9.1

m

29,225 (15)

7,627.46 (6.6)

A>95

²²⁹U

229.0335059 (64)

58

m

31,210.6 (6)

7,620.72 (2.6)

B+~80

²³⁰U

230.0339398 (51)

20.8

d

31,614.7 (4.8)

7,620.92 (2.1)

A

100

²³¹U

231.0362937 (32)

4.2

d

33,807.4 (3)

7,613.38 (1.3)

EC~100

²³²U

232.0371562 (24)

68.9

y

34,610.7 (2.2)

7,611.89 (1)

A

100

²³³U

233.0396352 (29)

159.2

ky

36,920.0 (2.7)

7,603.95 (1.2)

A

100

²³⁴U

234.0409521 (20)

0.0055 (2)

245.5

ky

38,146.6 (1.8)

7,600.708 (8)

²³⁵U

235.0439299 (20)

0.7200 (51)

704

My

40,920.5 (1.8)

7,590.907 (8)

²³⁶U

236.0455680 (20)

23.42

My

42,446.3 (1.8)

7,586.477 (8)

A

²³⁷U

237.0487302 (20)

6.75

d

45,391.9 (1.9)

7,576.094 (8)

B-

100

²³⁸U

238.0507882 (20)

99.2745 (106)

4.468

Gy

47,308.9 (1.9)

7,570.120 (8)

²³⁹U

239.0542933 (21)

23.45

m

50,573.9 (1.9)

7,558.557 (8)

B-

100

²⁴⁰U

240.0565920 (55)

14.1

h

52,715.1 (5.2)

7,551.77 (2.1)

B-

100

²⁴¹U

241.06033 (32)

5

m

56,200 (300)

7,539 (1)

B- ?

²⁴²U

242.06293 (22)

16.8

m

58,620 (200)

7,532 (1)

B-

100

^234mU

234.0409521 (20)

33.5

us

38,146.6 (1.8)

7,600.708 (8)

0

^235mU

235.0439299 (20)

~26

m

40,920.5 (1.8)

7,590.907 (8)

IT

100

^236mU

236.0455680 (20)

115

ns

42,446.3 (1.8)

7,586.477 (8)

0

^238mU

238.0507882 (20)

280

ns

47,308.9 (1.9)

7,570.120 (8)

IT

?

^239mU

239.0542933 (21)

>250

ns

50,573.9 (1.9)

7,558.557 (8)

B-

100

^239m1U

239.0542933 (21)

780

ns

50,573.9 (1.9)

7,558.557 (8)

IT

100