Er
Erbium-155
Protons (Z)
68
Neutrons (N)
87
Mass number
155
Half-Life
5.3 m
Abundance
---
Mass
154.933 u
Mass Excess
-62,209.0 keV
Spin
7/2-
Discovered
1969
Binding energy per nucleon
8,129 keV
Neutron separation energy
7,675 keV
Proton separation energy
4,859 keV
Decay Mode
Decay chain
- ErErbium-155Z 68 · N 875.3 m
- β⁺99.978%
- β⁺100%
- β⁺100%
- EC100%