Se

Selenium-81m

Protons (Z)

34

Neutrons (N)

47

Mass number

81

Half-Life

57.28 m

Abundance

---

Mass

80.918 u

Mass Excess

-76,286.0 keV

Spin

7/2+

Discovered

1971

Binding energy per nucleon

8,685 keV

Neutron separation energy

6,598 keV

Proton separation energy

11,360 keV

Decay Mode

Decay chain

Selenium-81Z 34 · N 4757.28 m
γ~100%
β⁻100%