La
Lanthanum-127m
Protons (Z)
57
Neutrons (N)
70
Mass number
127
Half-Life
3.7 m
Abundance
---
Mass
126.916 u
Mass Excess
-77,882.0 keV
Spin
(3/2+)
Discovered
1963
Binding energy per nucleon
8,333 keV
Neutron separation energy
10,983 keV
Proton separation energy
2,501 keV
Decay Mode
- β⁺→Barium-127100%
Decay chain
- LaLanthanum-127Z 57 · N 703.7 m
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%