P
15 polyatomic nonmetal Generated with AI
Phosphorus
Symbol P
Atomic Mass 30.9737619985
Phosphorus is a chemical element with symbol P and atomic number 15. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but due to its high reactivity, phosphorus is never found as a free element on Earth. Instead phosphorus-containing minerals are almost always present in their maximally oxidised state, as inorganic phosphate rocks.
Properties
- Phase: Solid
- Density: 1.823 g/cm³
- Melting Point: null K
- Boiling Point: null K