Hf

Hafnium-181

Protons (Z)

72

Neutrons (N)

109

Mass number

181

Half-Life

42.39 d

Abundance

---

Mass

180.949 u

Mass Excess

-47,403.0 keV

Spin

1/2-

Discovered

1935

Binding energy per nucleon

8,022 keV

Neutron separation energy

5,695 keV

Proton separation energy

8,012 keV

Decay Mode

β⁻Tantalum-181100%

Decay chain

Hafnium-181Z 72 · N 10942.39 d
β⁻100%