Name :  Phosphorus
Symbol :  P
Atomic Number :  15
Atomic Weight :  30.973762
Specific Heat :  0.77 J/gK
Melting Point :  44.1°C
Vaporization :  12.129 kJ/mol
Boiling Point :  277°C
Electronegativity :  2.19
Density@293 K :  1.82 g/cm³
Discovered :  Hennig Brand, Germany, 1669
Description :  Soft white waxy phosphorescent solid, brownish-red powder or black solid.
Uses :  Used in the production of fertilizers and detergents. Some is used in fireworks, safety matches, and incendiary weapons. Also some applications for it and some of its compounds which glow in the dark.