PERIODIC ELEMENT
P (Phosphorus )

 



Atomic number : 15
Atomic mass : 30.9738 g.mol-1
Electronegativity according to Pauling : 2.1
Density : 1.82 g.cm-3 at 20 °C
Melting point : 44.2 °C
Boiling point : 280 °C
Vanderwaals radius : 0.104 nm
Ionic radius : 0.34 nm
Isotopes : 3
Electronic shell : [Ne] 3s23p3
Energy of first ionisation : 10,118 eV
Energy of second ionisation : 19,725 eV
Energy of third ionisation : 29,141 eV
Discovered by : Hennig Brandt in 1669
 
Atomic Structure Uses (fertilizers, detergents, matchsticks )