Pt

Platinum-203m

Protons (Z)

78

Neutrons (N)

125

Mass number

203

Half-Life

12.0 s

Abundance

---

Mass

202.981 u

Mass Excess

-18,140.0 keV

Spin

(13/2+)

Discovered

2008

Binding energy per nucleon

7,860 keV

Neutron separation energy

3,519 keV

Proton separation energy

8,789 keV

Decay Mode

Decay chain

Platinum-203Z 78 · N 12512.0 s
β⁻100%
β⁻100%
β⁻100%