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