Isotopes of Francium

Notable Isotopes

222Fr [135 neutrons]

Abundance: synthetic

Half life: 14.2 minutes [ beta- ]

Decay Energy: 2.033 MeV

Decays to 222Ra.

223Fr [136 neutrons]

Abundance: 100%

Half life: 22.00 minutes [ beta- ]

Decay Energy: 1.149 MeV

Decays to 221Ra.

Half life: 22.00 minutes [ Alpha Decay ]

Decay Energy: 5.430 MeV

Decays to 219At.