Isotopes of Francium
Notable Isotopes
222
Fr
[135 neutrons]
Abundance:
synthetic
Half life:
14.2 minutes [
beta
-
]
Decay Energy:
2.033
MeV
Decays to
222
Ra
.
223
Fr
[136 neutrons]
Abundance:
100%
Half life:
22.00 minutes [
beta
-
]
Decay Energy:
1.149
MeV
Decays to
221
Ra
.
Half life:
22.00 minutes [
Alpha Decay
]
Decay Energy:
5.430
MeV
Decays to
219
At
.