Phosphorus

Nonmetal

Symbol: P

Atomic Number: 15

Standard State: Solid

Atomic Mass: 30.97376

Electron Configuration: [Ne]3s2 3p3

Electronegativity: 2.19

Atomic Radius: 180

Ionization Energy: 10.487

Melting Point: 317.3

Boiling Point: 553.65

Density: 1.82

Year Discovered: 1669