Po

Polonium-217

Protons (Z)

84

Neutrons (N)

133

Mass number

217

Half-Life

1.53 s

Abundance

---

Mass

217.006 u

Mass Excess

5,883.0 keV

Spin

(9/2+)

Discovered

1956

Binding energy per nucleon

7,741 keV

Neutron separation energy

3,971 keV

Proton separation energy

7,280 keV

Decay Mode

Decay chain

Polonium-217Z 84 · N 1331.53 s
α97.5%
β⁻100%
β⁻97.91%
α100%
β⁻100%
α100%