Eu
Europium-149m
Protons (Z)
63
Neutrons (N)
86
Mass number
149
Half-Life
2.45 µs
Abundance
---
Mass
148.918 u
Mass Excess
-75,945.0 keV
Spin
11/2-
Discovered
1961
Binding energy per nucleon
8,250 keV
Neutron separation energy
7,719 keV
Proton separation energy
3,898 keV
Decay Mode
- γ→Europium-149100%
Decay chain
- EuEuropium-149Z 63 · N 862.45 µs
- γ100%
- EC100%