Fr
Francium-200m
Protons (Z)
87
Neutrons (N)
113
Mass number
200
Half-Life
190.0 ms
Abundance
---
Mass
200.007 u
Mass Excess
6,180.0 keV
Spin
(10-)
Discovered
1996
Binding energy per nucleon
7,700 keV
Neutron separation energy
8,662 keV
Proton separation energy
-451 keV
Decay Mode
Decay chain
- FrFrancium-200Z 87 · N 113190.0 ms
- α100%
- α97.5%
- β⁺88%
- β⁺~100%
- β⁺100%
- EC100%
- β⁺100%