Zr

Zirconium-99m

Protons (Z)

40

Neutrons (N)

59

Mass number

99

Half-Life

336.0 ns

Abundance

---

Mass

98.917 u

Mass Excess

-77,365.0 keV

Spin

7/2+

Discovered

1970

Binding energy per nucleon

8,537 keV

Neutron separation energy

4,154 keV

Proton separation energy

12,365 keV

Decay Mode

γZirconium-99100%

Decay chain

Zirconium-99Z 40 · N 59336.0 ns
γ100%
β⁻100%
β⁻100%
β⁻100%
β⁻100%