Fr
Francium-205m
Protons (Z)
87
Neutrons (N)
118
Mass number
205
Half-Life
80.0 ns
Abundance
---
Mass
204.999 u
Mass Excess
-766.0 keV
Spin
13/2+
Discovered
2012
Binding energy per nucleon
7,743 keV
Neutron separation energy
9,444 keV
Proton separation energy
85 keV
Decay Mode
- γ→Francium-205100%
Decay chain
- FrFrancium-205Z 87 · N 11880.0 ns
- γ100%
- α98.5%
- α71%
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%