La
Lanthanum-137m
Protons (Z)
57
Neutrons (N)
80
Mass number
137
Half-Life
342.0 ns
Abundance
---
Mass
136.908 u
Mass Excess
-85,271.4 keV
Spin
19/2-
Discovered
1982
Binding energy per nucleon
8,368 keV
Neutron separation energy
7,303 keV
Proton separation energy
3,673 keV
Decay Mode
- γ→Lanthanum-137100%
Decay chain
- LaLanthanum-137Z 57 · N 80342.0 ns
- γ100%
- EC100%