Ir

Iridium-189m

Protons (Z)

77

Neutrons (N)

112

Mass number

189

Half-Life

13.3 ms

Abundance

---

Mass

188.959 u

Mass Excess

-38,078.0 keV

Spin

11/2-

Discovered

1960

Binding energy per nucleon

7,954 keV

Neutron separation energy

7,804 keV

Proton separation energy

4,230 keV

Decay Mode

γIridium-189100%

Decay chain

Iridium-189Z 77 · N 11213.3 ms
γ100%
EC100%