Platinum-191 (Pt-191)

Identity

Protons

78

Neutrons

113

Mass number

191

Mass

191.0 ± 4.4 u

Mass excess

-35.698 MeV

Spin

3/2-*

Stability

Half-life: 2.83 days

Natural occurrence

Not found in nature

Decays to

• electron capture → Ir-191