Nb

Niobium-91

Protons (Z)

41

Neutrons (N)

50

Mass number

91

Half-Life

680.0 y

Abundance

---

Mass

90.907 u

Mass Excess

-86,638.0 keV

Spin

9/2+

Discovered

1951

Binding energy per nucleon

8,671 keV

Neutron separation energy

12,047 keV

Proton separation energy

5,154 keV

Decay Mode

ECZirconium-91~100%
β⁺0.014%

Decay chain

Niobium-91Z 41 · N 50680.0 y
EC~100%