Ba
Barium-138m
Protons (Z)
56
Neutrons (N)
82
Mass number
138
Half-Life
850.0 ns
Abundance
---
Mass
137.907 u
Mass Excess
-86,171.27 keV
Spin
6+
Discovered
1971
Binding energy per nucleon
8,378 keV
Neutron separation energy
6,521 keV
Proton separation energy
6,914 keV
Decay Mode
- γ→Barium-138100%
Decay chain
- BaBarium-138Z 56 · N 82850.0 ns
- γ100%