Fr
Francium-214m
Protons (Z)
87
Neutrons (N)
127
Mass number
214
Half-Life
3.35 ms
Abundance
---
Mass
213.999 u
Mass Excess
-837.0 keV
Spin
(8-)
Discovered
1962
Binding energy per nucleon
7,757 keV
Neutron separation energy
5,354 keV
Proton separation energy
2,430 keV
Decay Mode
- α→Astatine-210100%
Decay chain
- FrFrancium-214Z 87 · N 1273.35 ms
- α100%
- β⁺99.825%
- α100%