Element overview
Phosphorus (P) is element 15 with a listed atomic mass of 30.973761998 u. It is in group 15 and period 3. Its category is nonmetal.
Atomic properties
Electron configuration: [Ne] 3s2 3p3. Electronegativity: 2.19. Common oxidation states: -3, +3, +5.
Physical properties
Density: 1.82; melting point: 317.3; boiling point: 553.7. Values depend on conditions, phase and source.