Zr

Zirconium-91

Protons (Z)

40

Neutrons (N)

51

Mass number

91

Half-Life

Stable

Abundance

11.22%

Mass

90.906 u

Mass Excess

-87,895.59 keV

Spin

5/2+

Discovered

1934

Binding energy per nucleon

8,693 keV

Neutron separation energy

7,194 keV

Proton separation energy

8,688 keV

Decay Mode

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