La
Lanthanum-128m
Protons (Z)
57
Neutrons (N)
71
Mass number
128
Half-Life
---
Abundance
---
Mass
127.916 u
Mass Excess
-78,530.0 keV
Spin
(1-)
Discovered
1995
Binding energy per nucleon
8,336 keV
Neutron separation energy
8,705 keV
Proton separation energy
3,001 keV
Decay Mode
Decay chain
- LaLanthanum-128Z 57 · N 71Unknown
- β⁺100%
- EC100%
- β⁺100%