Eu
Europium-140
Protons (Z)
63
Neutrons (N)
77
Mass number
140
Half-Life
1.51 s
Abundance
---
Mass
139.928 u
Mass Excess
-66,990.0 keV
Spin
1+
Discovered
1982
Binding energy per nucleon
8,198 keV
Neutron separation energy
9,663 keV
Proton separation energy
1,899 keV
Decay Mode
- β⁺95.1%
Decay chain
- EuEuropium-140Z 63 · N 771.51 s
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%
- β⁺100%