Pa

Protactinium-216

Protons (Z)

91

Neutrons (N)

125

Mass number

216

Half-Life

105.0 ms

Abundance

---

Mass

216.019 u

Mass Excess

17,824.0 keV

Spin

(5+)

Discovered

1972

Binding energy per nucleon

7,659 keV

Neutron separation energy

8,047 keV

Proton separation energy

386 keV

Decay Mode

Decay chain

Protactinium-216Z 91 · N 125105.0 ms
α100%
α100%
α89%
β⁺96.2%
β⁺99.33%
β⁺100%