Iridium-191 (Ir-191)

Identity

Protons

77

Neutrons

114

Mass number

191

Mass

191.0 ± 1.4 u

Mass excess

-36.709 MeV

Spin

3/2+*

Stability

stable

Natural occurrence

37.30 % of iridium

Produced by

• Os-191
• Pt-191