Ru

Ruthenium-109

Protons (Z)

44

Neutrons (N)

65

Mass number

109

Half-Life

34.4 s

Abundance

---

Mass

108.913 u

Mass Excess

-80,738.0 keV

Spin

(5/2+)

Discovered

1967

Binding energy per nucleon

8,496 keV

Neutron separation energy

5,148 keV

Proton separation energy

12,104 keV

Decay Mode

β⁻Rhodium-109100%

Decay chain

Ruthenium-109Z 44 · N 6534.4 s
β⁻100%
β⁻100%
β⁻100%