Zn

Zinc-81

Protons (Z)

30

Neutrons (N)

51

Mass number

81

Half-Life

299.4 ms

Abundance

---

Mass

80.95 u

Mass Excess

-46,200.0 keV

Spin

(1/2+)

Discovered

1991

Binding energy per nucleon

8,352 keV

Neutron separation energy

2,623 keV

Proton separation energy

16,809 keV

Decay Mode

Decay chain

Zinc-81Z 30 · N 51299.4 ms
β⁻77%
β⁻87.5%
β⁻100%
β⁻100%
β⁻100%