phosphorus

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Symbol:

P

Atomic Number:

15

Relative Atomic Mass:

30.973761 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

0.09% (mass fraction)

Electron Configuration:

[Ne]3s²3p³

Oxidation States:

V, III, -III

Atomic Radius:

110.5pm

Covalent Radius:

110pm

Ionic Radius:

17pm (for +5 oxidation state)

44pm (for +3 oxidation state)

Melting Point:

44.1°C

Density:

1.82 g cm^-3 (at 20°C)

First Ionisation Energy:

10.486 eV

Electronegativity (Allred and Rochow):

2.1

Number of Natural Isotopes:

1

Mass Number of the Most Abundant Isotopes:

31 g mol^-1 a 100% abundance