Os
Osmium-189
Protons (Z)
76
Neutrons (N)
113
Mass number
189
Half-Life
Stable
Abundance
16.15%
Mass
188.958 u
Mass Excess
-38,986.8 keV
Spin
3/2-
Discovered
1931
Binding energy per nucleon
7,963 keV
Neutron separation energy
5,921 keV
Proton separation energy
7,259 keV
Decay Mode
- α→Tungsten-185