Rn

Radon-197m

Protons (Z)

86

Neutrons (N)

111

Mass number

197

Half-Life

25.6 ms

Abundance

---

Mass

197.002 u

Mass Excess

1,709.0 keV

Spin

13/2+

Discovered

1996

Binding energy per nucleon

7,721 keV

Neutron separation energy

8,337 keV

Proton separation energy

1,670 keV

Decay Mode

Decay chain

Radon-197Z 86 · N 11125.6 ms
α100%
α100%
β⁺99.58%
β⁺100%
β⁺100%
β⁺~100%
β⁺100%
EC100%