Er

Erbium-171

Protons (Z)

68

Neutrons (N)

103

Mass number

171

Half-Life

7.52 h

Abundance

---

Mass

170.938 u

Mass Excess

-57,717.8 keV

Spin

5/2-

Discovered

1938

Binding energy per nucleon

8,098 keV

Neutron separation energy

5,682 keV

Proton separation energy

8,767 keV

Decay Mode

β⁻Thulium-171100%

Decay chain

Erbium-171Z 68 · N 1037.52 h
β⁻100%
β⁻100%