Symbol
P
Atomic Number
15
Atomic Mass
30.974
Protons
15
Neutrons
16
Electrons
15
Type
Non-metal
Isotopes
Phosphorus-31
Discovery Year
1669
Discovered By
Hennig Brand
Group
15
Period
3
Boiling Point
536°F (White Phosphorus)
Melting Point
111°F (White Phosphorus)
Electron Configuration
[Ne] 3s² 3p³
Density (g/cm³)
1.82
Crystal Structure
Orthorhombic (White Phosphorus)
Magnetism
Diamagnetic
Abundance in Earth's Crust
0.1%
Phase at Room Temperature
Solid