Po

Polonium-205m

Protons (Z)

84

Neutrons (N)

121

Mass number

205

Half-Life

310.0 ns

Abundance

---

Mass

204.981 u

Mass Excess

-17,378.0 keV

Spin

1/2-

Discovered

1960

Binding energy per nucleon

7,836 keV

Neutron separation energy

7,108 keV

Proton separation energy

4,021 keV

Decay Mode

γPolonium-205100%

Decay chain

Polonium-205Z 84 · N 121310.0 ns
γ100%
β⁺99.96%
β⁺100%
EC100%