Ir

Iridium-191n

Protons (Z)

77

Neutrons (N)

114

Mass number

191

Half-Life

5.7 s

Abundance

---

Mass

190.963 u

Mass Excess

-34,607.8 keV

Spin

(31/2+)

Discovered

1979

Binding energy per nucleon

7,937 keV

Neutron separation energy

5,926 keV

Proton separation energy

3,189 keV

Decay Mode

γIridium-191100%

Decay chain

Iridium-191Z 77 · N 1145.7 s
γ100%