Er
Erbium-170
Protons (Z)
68
Neutrons (N)
102
Mass number
170
Half-Life
Stable
Abundance
14.91%
Mass
169.935 u
Mass Excess
-60,107.5 keV
Spin
0+
Discovered
1934
Binding energy per nucleon
8,112 keV
Neutron separation energy
7,258 keV
Proton separation energy
8,600 keV
Decay Mode
- β⁻
- α→Dysprosium-166