Na

Sodium-20

Protons (Z)

11

Neutrons (N)

9

Mass number

20

Half-Life

447.9 ms

Abundance

---

Mass

20.007 u

Mass Excess

6,850.5 keV

Spin

2+

Discovered

1950

Binding energy per nucleon

7,299 keV

Neutron separation energy

14,150 keV

Proton separation energy

2,191 keV

Decay Mode

Decay chain

Sodium-20Z 11 · N 9447.9 ms
β⁺75%