Fr
Francium-197
Protons (Z)
87
Neutrons (N)
110
Mass number
197
Half-Life
2.3 ms
Abundance
---
Mass
197.011 u
Mass Excess
10,250.0 keV
Spin
(7/2-)
Discovered
2013
Binding energy per nucleon
7,674 keV
Neutron separation energy
---
Proton separation energy
-986 keV
Decay Mode
- α→Astatine-193100%
Decay chain
- FrFrancium-197Z 87 · N 1102.3 ms
- α100%
- α100%
- α100%
- β⁺100%
- β⁺94%
- β⁺99.74%
- β⁺~100%
- β⁺100%
- EC100%