Isotopes of Lanthanum
Notable Isotopes
137
La
[80 neutrons]
Abundance:
synthetic
Half life:
60000 years [
Electron Capture
]
Decay Energy:
0.600
MeV
Decays to
137
Ba
.
138
La
[81 neutrons]
Abundance:
0.09%
Half life:
1.05 x 10
11
years [
Electron Capture
]
Decay Energy:
1.737
MeV
Decays to
138
Ba
.
Half life:
1.05 x 10
11
years [
beta
-
]
Decay Energy:
1.044
MeV
Decays to
138
Ce
.
139
La
[82 neutrons]
Abundance:
99.91%
Stable with 82 neutrons