Fr
Francium-210
Protons (Z)
87
Neutrons (N)
123
Mass number
210
Half-Life
3.18 m
Abundance
---
Mass
209.996 u
Mass Excess
-3,344.0 keV
Spin
6+
Discovered
1964
Binding energy per nucleon
7,763 keV
Neutron separation energy
7,633 keV
Proton separation energy
1,692 keV
Decay Mode
Decay chain
- FrFrancium-210Z 87 · N 1233.18 m
- α71%
- β⁺99.1%
- β⁺94.55%
- β⁺100%