Ac
Actinium-216m
Protons (Z)
89
Neutrons (N)
127
Mass number
216
Half-Life
441.0 µs
Abundance
---
Mass
216.009 u
Mass Excess
8,188.0 keV
Spin
(9-)
Discovered
1966
Binding energy per nucleon
7,711 keV
Neutron separation energy
5,914 keV
Proton separation energy
1,633 keV
Decay Mode
Decay chain
- AcActinium-216Z 89 · N 127441.0 µs
- α100%
- β⁺57%
- α100%
- α~100%