Ac
Actinium-215m
Protons (Z)
89
Neutrons (N)
126
Mass number
215
Half-Life
185.0 ns
Abundance
---
Mass
215.008 u
Mass Excess
7,827.0 keV
Spin
(21/2-)
Discovered
1983
Binding energy per nucleon
7,711 keV
Neutron separation energy
6,677 keV
Proton separation energy
-445 keV
Decay Mode
- γ→Actinium-215100%
Decay chain
- AcActinium-215Z 89 · N 126185.0 ns
- γ100%
- α~100%
- α87%
- β⁺90%
- β⁺~100%
- β⁺100%