Fr

Francium-211n

Protons (Z)

87

Neutrons (N)

124

Mass number

211

Half-Life

124.5 ns

Abundance

---

Mass

211.001 u

Mass Excess

517.0 keV

Spin

45/2-

Discovered

1986

Binding energy per nucleon

7,746 keV

Neutron separation energy

4,210 keV

Proton separation energy

-2,833 keV

Decay Mode

γFrancium-211100%

Decay chain

Francium-211Z 87 · N 124124.5 ns
γ100%
α87%
β⁺90%
β⁺~100%
β⁺100%