Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

⁵⁸Ge

57.99101 (34)

-8,370 (320)

7,784 (5)

2p ?

⁵⁹Ge

58.98175 (30)

-17,000 (280)

7,935 (5)

2p ?

⁶⁰Ge

59.97019 (25)

30

ms

-27,770 (230)

8,117 (4)

B+ ?

⁶¹Ge

60.96379 (32)

39

ms

-33,730 (300)

8,214 (5)

B+

100

⁶²Ge

61.95465 (15)

130

ms

-42,240 (140)

8,349 (2)

B+

100

⁶³Ge

62.94964 (21)

142

ms

-46,910 (200)

8,419 (3)

B+

100

⁶⁴Ge

63.941653 (34)

63.7

s

-54,350 (32)

8,529.4 (5)

B+

100

⁶⁵Ge

64.93944 (11)

30.9

s

-56,410 (100)

8,554 (1.5)

B+

100

⁶⁶Ge

65.933843 (32)

2.26

h

-61,624 (30)

8,625.7 (4.6)

B+

100

⁶⁷Ge

66.9327341 (50)

18.9

m

-62,657.8 (4.7)

8,632.85 (7)

B+

100

⁶⁸Ge

67.9280942 (67)

270.95

d

-66,979.8 (6.2)

8,688.15 (9.2)

EC

100

⁶⁹Ge

68.9279645 (14)

39.05

h

-67,100.6 (1.3)

8,680.96 (1.9)

B+

100

⁷⁰Ge

69.9242474 (11)

20.84 (87)

stable

-70,563.1 (1)

8,721.72 (1.5)

⁷¹Ge

70.9249510 (11)

11.43

d

-69,907.7 (1)

8,703.33 (1.4)

EC

100

⁷²Ge

71.9220758 (18)

27.54 (34)

stable

-72,585.9 (1.6)

8,731.75 (2.3)

⁷³Ge

72.9234589 (18)

7.73 (5)

stable

-71,297.5 (1.6)

8,705.05 (2.2)

⁷⁴Ge

73.9211778 (18)

36.28 (73)

stable

-73,422.4 (1.6)

8,725.20 (2.2)

⁷⁵Ge

74.9228589 (18)

82.78

m

-71,856.4 (1.6)

8,695.60 (2.2)

B-

100

⁷⁶Ge

75.9214026 (18)

7.61 (38)

1.58

Zy

-73,213.0 (1.7)

8,705.24 (2.2)

⁷⁷Ge

76.9235486 (18)

11.3

h

-71,214.0 (1.7)

8,671.04 (2.2)

B-

100

⁷⁸Ge

77.9228527 (42)

88

m

-71,862.2 (3.9)

8,671.67 (5)

B-

100

⁷⁹Ge

78.925401 (96)

18.98

s

-69,489 (90)

8,634 (1.1)

B-

100

⁸⁰Ge

79.925372 (30)

29.5

s

-69,515 (28)

8,627.3 (3.5)

B-

100

⁸¹Ge

80.92882 (13)

8

s

-66,300 (120)

8,581 (1.5)

B-

100

⁸²Ge

81.92955 (26)

4.55

s

-65,620 (240)

8,566 (3)

B-

100

⁸³Ge

82.93462 (21)

1.85

s

-60,900 (200)

8,503 (2)

B-

100

⁸⁴Ge

83.93747 (32)

954

ms

-58,250 (300)

8,467 (4)

B-

100

⁸⁵Ge

84.94303 (43)

540

ms

-53,070 (400)

8,401 (5)

B-

100

⁸⁶Ge

85.94649 (54)

300

ms

-49,840 (500)

8,360 (6)

B- ?

⁸⁷Ge

86.95251 (54)

150

ms

-44,240 (500)

8,292 (6)

B- ?

⁸⁸Ge

87.95691 (75)

80

ms

-40,140 (700)

8,243 (8)

B- ?

⁸⁹Ge

88.96383 (97)

50

ms

-33,690 (900)

8,170 (10)

B- ?

^67mGe

66.9327341 (50)

13.7

us

-62,657.8 (4.7)

8,632.85 (7)

IT

100

^69mGe

68.9279645 (14)

5.1

us

-67,100.6 (1.3)

8,680.96 (1.9)

IT

100

^71mGe

70.9249510 (11)

20.4

ms

-69,907.7 (1)

8,703.33 (1.4)

IT

100

^72mGe

71.9220758 (18)

444.2

ns

-72,585.9 (1.6)

8,731.75 (2.3)

0

^73mGe

72.9234589 (18)

2.92

us

-71,297.5 (1.6)

8,705.05 (2.2)

IT

100

^75mGe

74.9228589 (18)

47.7

s

-71,856.4 (1.6)

8,695.60 (2.2)

IT~100

^77mGe

76.9235486 (18)

52.9

s

-71,214.0 (1.7)

8,671.04 (2.2)

B-

81 2

^79mGe

78.925401 (96)

39

s

-69,489 (90)

8,634 (1.1)

B-

96 1

^81mGe

80.92882 (13)

8

s

-66,300 (120)

8,581 (1.5)

B-~100

^67m1Ge

66.9327341 (50)

110.9

ns

-62,657.8 (4.7)

8,632.85 (7)

IT

100

^69m1Ge

68.9279645 (14)

2.81

us

-67,100.6 (1.3)

8,680.96 (1.9)

IT

100

^73m1Ge

72.9234589 (18)

499

ms

-71,297.5 (1.6)

8,705.05 (2.2)

IT

100