Re

Rhenium-187m

Protons (Z)

75

Neutrons (N)

112

Mass number

187

Half-Life

555.3 ns

Abundance

---

Mass

186.956 u

Mass Excess

-41,010.3 keV

Spin

9/2-

Discovered

1949

Binding energy per nucleon

7,977 keV

Neutron separation energy

7,154 keV

Proton separation energy

5,791 keV

Decay Mode

γRhenium-187100%

Decay chain

Rhenium-187Z 75 · N 112555.3 ns
γ100%
β⁻100%