Hf

Hafnium-189

Protons (Z)

72

Neutrons (N)

117

Mass number

189

Half-Life

400.0 ms

Abundance

---

Mass

188.971 u

Mass Excess

-27,150.0 keV

Spin

(3/2-)

Discovered

2009

Binding energy per nucleon

7,917 keV

Neutron separation energy

4,391 keV

Proton separation energy

10,619 keV

Decay Mode

β⁻Tantalum-189100%

Decay chain

Hafnium-189Z 72 · N 117400.0 ms
β⁻100%
β⁻100%
β⁻100%
β⁻100%