Rn

Radon-208

Protons (Z)

86

Neutrons (N)

122

Mass number

208

Half-Life

24.35 m

Abundance

---

Mass

207.99 u

Mass Excess

-9,655.0 keV

Spin

0+

Discovered

1955

Binding energy per nucleon

7,794 keV

Neutron separation energy

9,091 keV

Proton separation energy

3,717 keV

Decay Mode

Decay chain

Radon-208Z 86 · N 12224.35 m
α62%
β⁺99.33%
β⁺100%