Ru

Ruthenium-104

Protons (Z)

44

Neutrons (N)

60

Mass number

104

Half-Life

Stable

Abundance

18.62%

Mass

103.905 u

Mass Excess

-88,095.8 keV

Spin

0+

Discovered

1931

Binding energy per nucleon

8,587 keV

Neutron separation energy

8,900 keV

Proton separation energy

10,781 keV

Decay Mode

β⁻