Krypton Isotopic Data

 

 

 

Isotope

 

Isotopic Mass

amu

 

% Abundance

 

T1/2

 

T1/2

Units

 

Mass Excess

KeV

 

Binding Energy

Per Nucleon

KeV

 

Decay

Mode

 

Branching

Ratio

69Kr

68.96518 (43)

 

32

ms

-32,440 (400)

8,133 (6)

B+

100

70Kr

69.95526 (41)

 

57

ms

-41,680 (380)

8,264 (5)

B+ ?

 

71Kr

70.94963 (70)

 

100

ms

-46,920 (650)

8,336 (9.2)

B+

100

72Kr

71.9420920 (86)

 

17.16

s

-53,940.9 (8)

8,429.3 (1.1)

B+

100

73Kr

72.9392892 (71)

 

28.6

s

-56,551.8 (6.6)

8,460.18 (9)

B+

100

74Kr

73.9330844 (22)

 

11.5

m

-62,331.5 (2)

8,533.03 (2.8)

B+

100

75Kr

74.9309457 (87)

 

4.29

m

-64,323.6 (8.1)

8,553.4 (1.1)

B+

100

76Kr

75.9259101 (43)

 

14.8

h

-69,014.3 (4)

8,608.82 (5.3)

B+

100

77Kr

76.9246700 (21)

 

74.4

m

-70,169.4 (2)

8,616.84 (2.5)

B+

100

78Kr

77.9203648 (12)

0.35 (1)

stable

 

-74,179.7 (1.1)

8,661.26 (1.4)

 

 

79Kr

78.9200824 (42)

 

35.04

h

-74,442.7 (3.9)

8,657.12 (4.9)

B+

100

80Kr

79.9163790 (16)

2.28 (6)

stable

 

-77,892.5 (1.5)

8,692.92 (1.8)

 

 

81Kr

80.9165920 (21)

 

229

ky

-77,694.0 (2)

8,682.79 (2.5)

EC

100

82Kr

81.9134836 (19)

11.58 (14)

stable

 

-80,589.5 (1.8)

8,710.65 (2.2)

 

 

83Kr

82.9141361 (30)

11.49 (6)

stable

 

-79,981.7 (2.8)

8,695.62 (3.4)

 

 

84Kr

83.9115067 (30)

57.00 (4)

stable

 

-82,431.0 (2.8)

8,717.35 (3.3)

 

 

85Kr

84.9125273 (21)

 

10.776

y

-81,480.3 (1.9)

8,698.56 (2.3)

B-

100

86Kr

85.91061073 (11)

17.30 (22)

stable

 

-83,265.57 (10)

8,712.027 (1)

 

 

87Kr

86.91335486 (29)

 

76.3

m

-80,709.43 (27)

8,675.282 (3)

B-

100

88Kr

87.914447 (14)

 

2.84

h

-79,692 (13)

8,656.9 (1.5)

B-

100

89Kr

88.917631 (56)

 

3.15

m

-76,727 (52)

8,617.0 (5.8)

B-

100

90Kr

89.919517 (20)

 

32.32

s

-74,970 (19)

8,591.4 (2.1)

B-

100

91Kr

90.923445 (61)

 

8.57

s

-71,310 (57)

8,545.4 (6.3)

B-

100

92Kr

91.926156 (13)

 

1.84

s

-68,785 (12)

8,512.8 (1.3)

B-

100

93Kr

92.93127 (11)

 

1.286

s

-64,020 (100)

8,457 (1.1)

B-

100

94Kr

93.93436 (32)

 

210

ms

-61,140 (300)

8,422 (3)

B-

100

95Kr

94.93984 (43)

 

114

ms

-56,040 (400)

8,365 (4)

B-

100

96Kr

95.94307 (54)

 

80

ms

-53,030 (500)

8,330 (5)

B-

100

97Kr

96.94856 (54)

 

63

ms

-47,920 (500)

8,275 (5)

B-

100

98Kr

97.95191 (64)

 

46

ms

-44,800 (600)

8,241 (6)

B-

100

99Kr

98.95760 (64)

 

40

ms

-39,500 (600)

8,186 (6)

B-

100

100Kr

99.96114 (54)

 

10

ms

-36,200 (500)

8,152 (5)

B- ?

 

73mKr

72.9392892 (71)

 

107

ns

-56,551.8 (6.6)

8,460.18 (9)

IT

100

74mKr

73.9330844 (22)

 

29

ns

-62,331.5 (2)

8,533.03 (2.8)

IT

100

79mKr

78.9200824 (42)

 

50

s

-74,442.7 (3.9)

8,657.12 (4.9)

IT

100

81mKr

80.9165920 (21)

 

13.1

s

-77,694.0 (2)

8,682.79 (2.5)

IT~100

 

83mKr

82.9141361 (30)

 

154.4

ns

-79,981.7 (2.8)

8,695.62 (3.4)

IT

100

84mKr

83.9115067 (30)

 

1.89

us

-82,431.0 (2.8)

8,717.35 (3.3)

IT

100

85mKr

84.9125273 (21)

 

4.48

h

-81,480.3 (1.9)

8,698.56 (2.3)

B-

78.6 4

79m1Kr

78.9200824 (42)

 

78.7

ns

-74,442.7 (3.9)

8,657.12 (4.9)

IT

100

83m1Kr

82.9141361 (30)

 

1.83

h

-79,981.7 (2.8)

8,695.62 (3.4)

IT

100

85m1Kr

84.9125273 (21)

 

1.6

us

-81,480.3 (1.9)

8,698.56 (2.3)

IT

100

 

Data Source: ENSDF March 2005

©Radiochemistry Society 2005