K

Potassium-40m

Protons (Z)

19

Neutrons (N)

21

Mass number

40

Half-Life

336.0 ns

Abundance

---

Mass

39.966 u

Mass Excess

-31,891.86 keV

Spin

0+

Discovered

1968

Binding energy per nucleon

8,497 keV

Neutron separation energy

6,156 keV

Proton separation energy

5,939 keV

Decay Mode

γPotassium-40100%

Decay chain

Potassium-40Z 19 · N 21336.0 ns
γ100%
β⁻89.28%