Rn

Radon-210m

Protons (Z)

86

Neutrons (N)

124

Mass number

210

Half-Life

644.0 ns

Abundance

---

Mass

209.992 u

Mass Excess

-7,900.0 keV

Spin

8+

Discovered

1979

Binding energy per nucleon

7,789 keV

Neutron separation energy

7,030 keV

Proton separation energy

2,305 keV

Decay Mode

γRadon-210100%

Decay chain

Radon-210Z 86 · N 124644.0 ns
γ100%
α96%
β⁺94.55%
β⁺100%