Sm
Samarium-137
Protons (Z)
62
Neutrons (N)
75
Mass number
137
Half-Life
45.0 s
Abundance
---
Mass
136.927 u
Mass Excess
-67,992.0 keV
Spin
(9/2-)
Discovered
1986
Binding energy per nucleon
8,214 keV
Neutron separation energy
9,252 keV
Proton separation energy
4,111 keV
Decay Mode
- β⁺→Promethium-137100%
Decay chain
- SmSamarium-137Z 62 · N 7545.0 s
- β⁺100%
- β⁺
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%