Rn

Radon-203

Protons (Z)

86

Neutrons (N)

117

Mass number

203

Half-Life

44.2 s

Abundance

---

Mass

202.993 u

Mass Excess

-6,184.0 keV

Spin

3/2-

Discovered

1967

Binding energy per nucleon

7,770 keV

Neutron separation energy

7,980 keV

Proton separation energy

2,878 keV

Decay Mode

Decay chain

Radon-203Z 86 · N 11744.2 s
α66%
β⁺92.5%
β⁺100%
β⁺100%
β⁺100%