Pt

Platinum-199m

Protons (Z)

78

Neutrons (N)

121

Mass number

199

Half-Life

13.48 s

Abundance

---

Mass

198.971 u

Mass Excess

-26,964.7 keV

Spin

13/2+

Discovered

1959

Binding energy per nucleon

7,900 keV

Neutron separation energy

5,132 keV

Proton separation energy

8,544 keV

Decay Mode

γPlatinum-199100%

Decay chain

Platinum-199Z 78 · N 12113.48 s
γ100%
β⁻100%
β⁻100%