Se

Selenium-74

Protons (Z)

34

Neutrons (N)

40

Mass number

74

Half-Life

Stable

Abundance

0.86%

Mass

73.922 u

Mass Excess

-72,213.21 keV

Spin

0+

Discovered

1922

Binding energy per nucleon

8,688 keV

Neutron separation energy

12,058 keV

Proton separation energy

8,549 keV

Decay Mode

β⁺