Er

Erbium-169m

Protons (Z)

68

Neutrons (N)

101

Mass number

169

Half-Life

285.0 ns

Abundance

---

Mass

168.935 u

Mass Excess

-60,829.2 keV

Spin

(5/2-)

Discovered

1969

Binding energy per nucleon

8,116 keV

Neutron separation energy

5,911 keV

Proton separation energy

8,058 keV

Decay Mode

γErbium-169100%

Decay chain

Erbium-169Z 68 · N 101285.0 ns
γ100%
β⁻100%