Isotope

Isotopic Mass

amu

% Abundance

T_1/2

T_1/2

Units

Mass Excess

KeV

Binding Energy

Per Nucleon

KeV

Decay

Mode

Branching

Ratio

⁶⁷Br

66.96479 (54)

-32,800 (500)

8,152 (8)

p ?

⁶⁸Br

67.95852 (38)

<1.5

us

-38,640 (360)

8,237 (5)

p ?

⁶⁹Br

68.95011 (11)

<24

ns

-46,480 (100)

8,348 (2)

p ?

⁷⁰Br

69.94479 (33)

79.1

ms

-51,430 (310)

8,415 (4)

B+

100

⁷¹Br

70.93874 (61)

21.4

s

-57,060 (570)

8,489 (8)

B+

100

⁷²Br

71.936645 (64)

78.6

s

-59,015 (60)

8,510.7 (8.3)

B+

100

⁷³Br

72.931692 (55)

3.4

m

-63,629 (51)

8,567.8 (7)

B+

100

⁷⁴Br

73.929891 (16)

25.4

m

-65,306 (15)

8,583.8 (2)

B+

100

⁷⁵Br

74.925776 (15)

96.7

m

-69,139 (14)

8,628.1 (1.9)

B+

100

⁷⁶Br

75.924541 (10)

16.2

h

-70,289.2 (9.5)

8,635.9 (1.2)

B+

100

⁷⁷Br

76.9213791 (35)

57.036

h

-73,234.9 (3.3)

8,666.81 (4.2)

B+

100

⁷⁸Br

77.9211457 (42)

6.46

m

-73,452.3 (3.9)

8,661.96 (5.1)

B+~100

⁷⁹Br

78.9183371 (22)

50.69 (7)

stable

-76,068.5 (2)

8,687.60 (2.6)

⁸⁰Br

79.9185293 (22)

17.68

m

-75,889.5 (2)

8,677.66 (2.5)

B-

91.7 2

⁸¹Br

80.9162906 (21)

49.31 (7)

stable

-77,974.8 (2)

8,695.92 (2.4)

⁸²Br

81.9168041 (21)

35.282

h

-77,496.5 (2)

8,682.47 (2.4)

B-

100

⁸³Br

82.9151804 (45)

2.4

h

-79,008.9 (4.2)

8,693.33 (5.1)

B-

100

⁸⁴Br

83.916479 (16)

31.8

m

-77,799 (15)

8,671.5 (1.7)

B-

100

⁸⁵Br

84.915608 (21)

2.9

m

-78,610 (19)

8,674.0 (2.2)

B-

100

⁸⁶Br

85.918798 (12)

55.1

s

-75,640 (11)

8,632.5 (1.3)

B-

100

⁸⁷Br

86.920711 (19)

55.65

s

-73,857 (18)

8,605.5 (2)

B-

100

⁸⁸Br

87.924066 (41)

16.36

s

-70,732 (38)

8,563.9 (4.4)

B-

100

⁸⁹Br

88.926385 (64)

4.4

s

-68,572 (60)

8,534.1 (6.7)

B-

100

⁹⁰Br

89.930628 (83)

1.91

s

-64,620 (77)

8,485.1 (8.6)

B-

100

⁹¹Br

90.933968 (78)

541

ms

-61,508 (73)

8,446.3 (8)

B-

100

⁹²Br

91.939259 (53)

343

ms

-56,580 (50)

8,388.7 (5.4)

B-

100

⁹³Br

92.94305 (32)

102

ms

-53,050 (300)

8,347 (3)

B-

100

⁹⁴Br

93.94868 (43)

70

ms

-47,800 (400)

8,289 (4)

B-

100

⁹⁵Br

94.95287 (54)

50

ms

-43,900 (500)

8,245 (5)

B- ?

⁹⁶Br

95.95853 (75)

20

ms

-38,630 (700)

8,188 (7)

B- ?

⁹⁷Br

96.96280 (86)

10

ms

-34,650 (800)

8,146 (8)

B- ?

^69mBr

68.95011 (11)

*

-46,480 (100)

8,348 (2)

0

^70mBr

69.94479 (33)

2.2

s

-51,430 (310)

8,415 (4)

B+

?

^72mBr

71.936645 (64)

10.6

s

-59,015 (60)

8,510.7 (8.3)

IT~100

^74mBr

73.929891 (16)

46

m

-65,306 (15)

8,583.8 (2)

B+

100

^76mBr

75.924541 (10)

1.31

s

-70,289.2 (9.5)

8,635.9 (1.2)

IT>99.4

^77mBr

76.9213791 (35)

4.28

m

-73,234.9 (3.3)

8,666.81 (4.2)

IT

100

^78mBr

77.9211457 (42)

119.2

us

-73,452.3 (3.9)

8,661.96 (5.1)

0

^79mBr

78.9183371 (22)

4.86

s

-76,068.5 (2)

8,687.60 (2.6)

IT

100

^80mBr

79.9185293 (22)

4.4205

h

-75,889.5 (2)

8,677.66 (2.5)

IT

100

^81mBr

80.9162906 (21)

34.6

us

-77,974.8 (2)

8,695.92 (2.4)

0

^82mBr

81.9168041 (21)

6.13

m

-77,496.5 (2)

8,682.47 (2.4)

IT

97.6 3

^83mBr

82.9151804 (45)

700

ns

-79,008.9 (4.2)

8,693.33 (5.1)

IT

100

^84mBr

83.916479 (16)

6

m

-77,799 (15)

8,671.5 (1.7)

B-

100

^88mBr

87.924066 (41)

5.4

us

-70,732 (38)

8,563.9 (4.4)

IT

100

^69m1Br

68.95011 (11)

-46,480 (100)

8,348 (2)

0

^84m1Br

83.916479 (16)

<140

ns

-77,799 (15)

8,671.5 (1.7)

IT

100