Fr

Francium-232

Protons (Z)

87

Neutrons (N)

145

Mass number

232

Half-Life

5.5 s

Abundance

---

Mass

232.049 u

Mass Excess

46,073.0 keV

Spin

(5)

Discovered

1990

Binding energy per nucleon

7,579 keV

Neutron separation energy

4,079 keV

Proton separation energy

7,766 keV

Decay Mode

β⁻Radium-232100%
β⁻SF

Decay chain

Francium-232Z 87 · N 1455.5 s
β⁻100%
β⁻100%
β⁻100%
α~100%
β⁻100%
β⁻100%
α~100%
α~100%
α100%
α100%
β⁻100%
β⁻64.046%
α100%