Fr

Francium-224

Protons (Z)

87

Neutrons (N)

137

Mass number

224

Half-Life

3.33 m

Abundance

---

Mass

224.023 u

Mass Excess

21,749.0 keV

Spin

1-

Discovered

1969

Binding energy per nucleon

7,670 keV

Neutron separation energy

4,705 keV

Proton separation energy

5,930 keV

Decay Mode

β⁻Radium-224100%

Decay chain

Francium-224Z 87 · N 1373.33 m
β⁻100%
α~100%
α100%
α100%
β⁻100%
β⁻64.046%
α100%