Nd
Neodymium-139m
Protons (Z)
60
Neutrons (N)
79
Mass number
139
Half-Life
5.5 h
Abundance
---
Mass
138.912 u
Mass Excess
-81,786.0 keV
Spin
11/2-
Discovered
1951
Binding energy per nucleon
8,322 keV
Neutron separation energy
7,840 keV
Proton separation energy
5,946 keV
Decay Mode
Decay chain
- NdNeodymium-139Z 60 · N 795.5 h
- β⁺87%
- β⁺100%
- EC100%