Eu
Europium-140m
Protons (Z)
63
Neutrons (N)
77
Mass number
140
Half-Life
125.0 ms
Abundance
---
Mass
139.928 u
Mass Excess
-66,780.0 keV
Spin
(5-)
Discovered
1988
Binding energy per nucleon
8,196 keV
Neutron separation energy
9,453 keV
Proton separation energy
1,689 keV
Decay Mode
Decay chain
- EuEuropium-140Z 63 · N 77125.0 ms
- γ100%
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%
- β⁺100%