Fr

Francium-218

Protons (Z)

87

Neutrons (N)

131

Mass number

218

Half-Life

1.4 ms

Abundance

---

Mass

218.008 u

Mass Excess

7,059.0 keV

Spin

1-

Discovered

1949

Binding energy per nucleon

7,727 keV

Neutron separation energy

5,327 keV

Proton separation energy

3,889 keV

Decay Mode

αAstatine-214100%

Decay chain

Francium-218Z 87 · N 1311.4 ms
α100%
α100%
β⁻~100%
α100%