Ac
Actinium-227
Protons (Z)
89
Neutrons (N)
138
Mass number
227
Half-Life
21.77 y
Abundance
---
Mass
227.028 u
Mass Excess
25,849.5 keV
Spin
3/2-
Discovered
1851
Binding energy per nucleon
7,651 keV
Neutron separation energy
6,531 keV
Proton separation energy
5,107 keV
Decay Mode
Decay chain
- AcActinium-227Z 89 · N 13821.77 y
- β⁻98.62%
- α100%
- α~100%
- α100%
- α~100%
- β⁻100%
- α~100%
- β⁻100%