Ne

Neon-21

Protons (Z)

10

Neutrons (N)

11

Mass number

21

Half-Life

Stable

Abundance

0.27%

Mass

20.994 u

Mass Excess

-5,731.78 keV

Spin

3/2+

Discovered

1928

Binding energy per nucleon

7,972 keV

Neutron separation energy

6,761 keV

Proton separation energy

13,003 keV

Decay Mode

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