Atomic Number 15    Atomic Mass 30.9737620      Electronegativity 2.19

Density black 2.70 g/mL   

Density red 2.34 g/mL     Melting Point 590°C     Boiling Point 280°C

Density violet 2.36 g/mL     Melting Point 590°C     Boiling Point 280°C

Density yellow 1.82 g/mL     Melting Point 44.1°C     Boiling Point 280°C

Natural Isotope P-31 100%

Abbreviated Electron Configuration [Ne] 3s² 3p³

Discovered by Hennig Brand in 1669.