Isotopes of Krypton
Notable Isotopes
78
Kr
[42 neutrons]
Abundance:
0.35%
Half life:
2.3 x 10
20
years [
Double Electron Capture
]
Decay Energy:
?
MeV
Decays to
78
Se
.
79
Kr
[43 neutrons]
Abundance:
synthetic
Half life:
35.04 hours [
Electron Capture
]
Decay Energy:
?
MeV
Decays to
79
Br
.
Half life:
35.04 hours [
beta
+
]
Decay Energy:
0.604
MeV
Decays to
79
Br
.
Half life:
35.04 hours [
Gamma Radiation
]
Decay Energy:
0.26, 0.39, 0.60
MeV
Decays to ?.
80
Kr
[44 neutrons]
Abundance:
2.25%
Stable with 44 neutrons
Half life:
44
Decay Energy:
MeV
Decays to .
81
Kr
[45 neutrons]
Abundance:
synthetic
Half life:
2.29 x 10
5
years [
Electron Capture
]
Decay Energy:
?
MeV
Decays to
81
Br
.
Half life:
2.29 x 10
5
years [
Gamma Radiation
]
Decay Energy:
0.281
MeV
Decays to ?.
82
Kr
[46 neutrons]
Abundance:
11.6%
Stable with 46 neutrons
83
Kr
[47 neutrons]
Abundance:
11.5%
Stable with 47
84
Kr
[48 neutrons]
Abundance:
57%
Stable with 48 neutrons
85
Kr
[49 neutrons]
Abundance:
synthetic
Half life:
10.756 years [
beta
-
]
Decay Energy:
0.687
MeV
Decays to
85
Rb
.
86
Kr
[50 neutrons]
Abundance:
17.3%
Stable with 50 neutrons