Rubidium Isotopic Data

 

 

 

Isotope

 

Isotopic Mass

amu

 

% Abundance

 

T1/2

 

T1/2

Units

 

Mass Excess

KeV

 

Binding Energy

Per Nucleon

KeV

 

Decay

Mode

 

Branching

Ratio

71Rb

70.96532 (54)

 

*

 

-32,300 (500)

8,119 (7)

p ?

 

72Rb

71.95908 (54)

 

<1.5

us

-38,120 (500)

8,199 (7)

p ?

 

73Rb

72.95056 (16)

 

<30

ns

-46,050 (150)

8,306 (2)

p ?

 

74Rb

73.9442648 (39)

 

64.76

ms

-51,917.1 (3.7)

8,381.73 (5)

B+

100

75Rb

74.9385700 (80)

 

19

s

-57,221.7 (7.5)

8,448.32 (9.9)

B+

100

76Rb

75.9350722 (20)

 

36.5

s

-60,479.8 (1.9)

8,486.23 (2.5)

B+

100

77Rb

76.9304080 (80)

 

3.77

m

-64,824.5 (7.5)

8,537.26 (9.7)

B+

100

78Rb

77.9281410 (80)

 

17.66

m

-66,936.2 (7.5)

8,558.36 (9.6)

B+

100

79Rb

78.9239895 (64)

 

22.9

m

-70,803.4 (6)

8,601.15 (7.6)

B+

100

80Rb

79.9225193 (75)

 

33.4

s

-72,172.9 (7)

8,611.64 (8.7)

B+

100

81Rb

80.9189959 (64)

 

4.576

h

-75,454.8 (6)

8,645.49 (7.4)

B+

100

82Rb

81.9182086 (30)

 

1.273

m

-76,188.2 (2.8)

8,647.43 (3.4)

B+

100

83Rb

82.9151097 (64)

 

86.2

d

-79,074.8 (6)

8,675.27 (7.2)

EC

100

84Rb

83.9143848 (30)

 

32.77

d

-79,750.0 (2.8)

8,676.12 (3.3)

B+

96.2 5

85Rb

84.911789737 (12)

72.17 (2)

stable

 

-82,167.331 (11)

8,697 (0)

 

 

86Rb

85.91116742 (21)

 

18.642

d

-82,747.02 (20)

8,696.901 (2)

B-~100

 

87Rb

86.909180526 (12)

27.83 (2)

49.23

Gy

-84,597.795 (12)

8,711 (0)

 

 

88Rb

87.91131559 (17)

 

17.78

m

-82,609.00 (16)

8,681.115 (2)

B-

100

89Rb

88.9122780 (59)

 

15.15

m

-81,712.5 (5.5)

8,664.19 (6.1)

B-

100

90Rb

89.9148017 (70)

 

158

s

-79,361.7 (6.5)

8,631.48 (7.3)

B-

100

91Rb

90.9165370 (86)

 

58.4

s

-77,745.3 (8.1)

8,607.56 (8.9)

B-

100

92Rb

91.9197289 (66)

 

4.492

s

-74,772.0 (6.1)

8,569.42 (6.6)

B-

100

93Rb

92.9220419 (81)

 

5.84

s

-72,617.5 (7.6)

8,540.90 (8.1)

B-

100

94Rb

93.9264049 (90)

 

2.702

s

-68,553.4 (8.4)

8,492.66 (8.9)

B-

100

95Rb

94.929303 (23)

 

377.5

ms

-65,854 (21)

8,459.8 (2.2)

B-

100

96Rb

95.934273 (32)

 

203

ms

-61,225 (29)

8,407.5 (3.1)

B-

100

97Rb

96.937352 (33)

 

169.9

ms

-58,356 (31)

8,374.5 (3.2)

B-

100

98Rb

97.941791 (54)

 

114

ms

-54,222 (50)

8,329.2 (5.1)

B-

100

99Rb

98.94538 (13)

 

50.3

ms

-50,880 (130)

8,293 (1.3)

B-

100

100Rb

99.94987 (32)

 

51

ms

-46,700 (300)

8,249 (3)

B-

100

101Rb

100.95320 (18)

 

32

ms

-43,600 (170)

8,216 (1.6)

B-

100

102Rb

101.95887 (54)

 

37

ms

-38,310 (500)

8,163 (5)

B-

100

71mRb

70.96532 (54)

 

*

 

-32,300 (500)

8,119 (7)

0

 

72mRb

71.95908 (54)

 

1

us

-38,120 (500)

8,199 (7)

p ?

 

73mRb

72.95056 (16)

 

 

 

-46,050 (150)

8,306 (2)

0

 

76mRb

75.9350722 (20)

 

3.05

us

-60,479.8 (1.9)

8,486.23 (2.5)

IT

100

78mRb

77.9281410 (80)

 

5.74

m

-66,936.2 (7.5)

8,558.36 (9.6)

B+

90 2

80mRb

79.9225193 (75)

 

1.6

us

-72,172.9 (7)

8,611.64 (8.7)

0

 

81mRb

80.9189959 (64)

 

30.5

m

-75,454.8 (6)

8,645.49 (7.4)

IT

97.6 6

82mRb

81.9182086 (30)

 

6.472

h

-76,188.2 (2.8)

8,647.43 (3.4)

B+~100

 

83mRb

82.9151097 (64)

 

7.8

ms

-79,074.8 (6)

8,675.27 (7.2)

IT

100

84mRb

83.9143848 (30)

 

20.26

m

-79,750.0 (2.8)

8,676.12 (3.3)

IT~100

 

86mRb

85.91116742 (21)

 

1.017

m

-82,747.02 (20)

8,696.901 (2)

IT~100

 

90mRb

89.9148017 (70)

 

258

s

-79,361.7 (6.5)

8,631.48 (7.3)

B-

97.4 4

93mRb

92.9220419 (81)

 

57

us

-72,617.5 (7.6)

8,540.90 (8.1)

IT

100

96mRb

95.934273 (32)

 

200

ms

-61,225 (29)

8,407.5 (3.1)

B- ?

 

98mRb

97.941791 (54)

 

96

ms

-54,222 (50)

8,329.2 (5.1)

B-

100

71m1Rb

70.96532 (54)

 

 

 

-32,300 (500)

8,119 (7)

0

 

78m1Rb

77.9281410 (80)

 

R=2.0~0.5

 

-66,936.2 (7.5)

8,558.36 (9.6)

0

 

90m1Rb

89.9148017 (70)

 

1

 

-79,361.7 (6.5)

8,631.48 (7.3)

0

 

 

Data Source: ENSDF March 2005

Radiochemistry Society 2005