Isotopes of Actinium
Notes
No stable isotopes of Actinium exist.
Notable Isotopes
225Ac [136 neutrons]
Abundance: Synthetic
Half life: 10 days [ Alpha Decay ]
Decay Energy: 5.935 MeV
Decays to 221Fr.
226Ac [137 neutrons]
Abundance: Synthetic
Half life: 29.32 hours [ beta- ]
Decay Energy: 1.117 MeV
Decays to 226Th.
Half life: 29.32 hours [ Electron Capture ]
Decay Energy: 0.640 MeV
Decays to 226Ra.
Half life: 29.32 hours [ Alpha Decay ]
Decay Energy: 5.536 MeV
Decays to 222Fr.
227Ac [138 neutrons]
Abundance: 100%
Half life: 21.773 years [ beta- ]
Decay Energy: 0.0.45 MeV
Decays to 227Th.
Half life: 21.773 years [ Alpha Decay ]
Decay Energy: 5.042 MeV
Decays to 223Fr.