Which one of the following forms of phosphorus is most reactive? A. Black phosphorus B. White phosphorus C. Violet phosphorus D. Red phosphorus

White phosphorus is the most reactive form of phosphorus. It is a waxy, white solid that is highly flammable and explosive. It is also very toxic and can cause severe burns. White phosphorus is used in matches, fireworks, and incendiary devices.

Black phosphorus is a non-metallic, black solid that is less reactive than white phosphorus. It is used in semiconductors and solar cells.

Violet phosphorus is a rare, purple form of phosphorus that is even less reactive than black phosphorus. It is used in research and has no commercial applications.

Red phosphorus is a red, amorphous form of phosphorus that is less reactive than white phosphorus but more reactive than black phosphorus. It is used in matches, fireworks, and pesticides.