fosforuksen

Fosforuksen is a chemical element with the symbol P and atomic number 15. It is a highly reactive nonmetal belonging to the nitrogen group. Pure phosphorus exists in several allotropes, the most common being white phosphorus and red phosphorus. White phosphorus is a waxy, colorless solid that is extremely toxic and pyrophoric, meaning it ignites spontaneously in air. Red phosphorus is a more stable allotrope and is commonly used in matches. Black phosphorus is the most thermodynamically stable allotrope and has a graphite-like structure.

Phosphorus is essential for all known forms of life. In biological systems, it is a key component of DNA and RNA, as well as ATP, the energy currency of cells. It also plays a crucial role in cell membranes and bone structure. In industry, phosphorus compounds are used in fertilizers, detergents, pesticides, and in the production of steel. The element was first isolated in 1669 by Hennig Brand.