Ce
Cerium-138
Protons (Z)
58
Neutrons (N)
80
Mass number
138
Half-Life
Stable
Abundance
0.251%
Mass
137.906 u
Mass Excess
-87,565.9 keV
Spin
0+
Discovered
1936
Binding energy per nucleon
8,377 keV
Neutron separation energy
9,718 keV
Proton separation energy
7,714 keV
Decay Mode
- β⁺