Ir

Iridium-189

Protons (Z)

77

Neutrons (N)

112

Mass number

189

Half-Life

13.2 d

Abundance

---

Mass

188.959 u

Mass Excess

-38,450.0 keV

Spin

3/2+

Discovered

1955

Binding energy per nucleon

7,956 keV

Neutron separation energy

8,176 keV

Proton separation energy

4,602 keV

Decay Mode

ECOsmium-189100%

Decay chain

Iridium-189Z 77 · N 11213.2 d
EC100%