Ge

Germanium-81

Protons (Z)

32

Neutrons (N)

49

Mass number

81

Half-Life

9.0 s

Abundance

---

Mass

80.929 u

Mass Excess

-66,291.7 keV

Spin

(9/2+)

Discovered

1972

Binding energy per nucleon

8,581 keV

Neutron separation energy

4,828 keV

Proton separation energy

14,357 keV

Decay Mode

β⁻Arsenic-81100%

Decay chain

Germanium-81Z 32 · N 499.0 s
β⁻100%
β⁻100%
β⁻100%