Ir

Iridium-188m

Protons (Z)

77

Neutrons (N)

111

Mass number

188

Half-Life

4.15 ms

Abundance

---

Mass

187.96 u

Mass Excess

-37,381.0 keV

Spin

(11-)

Discovered

1971

Binding energy per nucleon

7,950 keV

Neutron separation energy

5,903 keV

Proton separation energy

3,451 keV

Decay Mode

Decay chain

Iridium-188Z 77 · N 1114.15 ms
γ100%
β⁺100%