Ac
Actinium-218
Protons (Z)
89
Neutrons (N)
129
Mass number
218
Half-Life
1.0 µs
Abundance
---
Mass
218.012 u
Mass Excess
10,850.0 keV
Spin
(1-)
Discovered
1970
Binding energy per nucleon
7,702 keV
Neutron separation energy
5,923 keV
Proton separation energy
2,329 keV
Decay Mode
- α→Francium-214100%
Decay chain
- AcActinium-218Z 89 · N 1291.0 µs
- α100%
- α100%
- β⁺99.825%
- α100%