Fr
Francium-203
Protons (Z)
87
Neutrons (N)
116
Mass number
203
Half-Life
550.0 ms
Abundance
---
Mass
203.001 u
Mass Excess
876.0 keV
Spin
9/2-
Discovered
1967
Binding energy per nucleon
7,732 keV
Neutron separation energy
10,297 keV
Proton separation energy
138 keV
Decay Mode
Decay chain
- FrFrancium-203Z 87 · N 116550.0 ms
- α100%
- α89%
- β⁺~100%
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%