The chemical element that starts with the letter K is Potassium. Its chemical symbol is K, derived from its Latin name Kalium.
Potassium is a soft, silvery-white metal that belongs to the alkali metal group of the periodic table. It is highly reactive and is never found in its elemental form in nature. Instead, it is found in various minerals and salts.
Potassium is essential for various biological processes in both plants and animals. In humans, it plays a crucial role in maintaining fluid and electrolyte balance, nerve signal transmission, and muscle contraction.