P

Phosphorus-31

Protons (Z)

15

Neutrons (N)

16

Mass number

31

Half-Life

Stable

Abundance

100%

Mass

30.974 u

Mass Excess

-24,440.544 keV

Spin

1/2+

Discovered

1920

Binding energy per nucleon

8,481 keV

Neutron separation energy

12,311 keV

Proton separation energy

7,297 keV

Decay Mode

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