Potassium

Potassium is a chemical element with the symbol K and atomic number 19. It is a soft, silvery-white metal that belongs to the alkali metal group of elements. Potassium is highly reactive and can easily react with water, oxygen, and other substances. It is an essential nutrient for plants, animals, and humans, and is found in many foods such as bananas, potatoes, and spinach.

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Potassium plays a crucial role in maintaining the balance of fluids in the body, regulating blood pressure, and supporting proper muscle and nerve function. It is also used in various industries, including agriculture, fertilizers, and pharmaceuticals. Potassium compounds are used as food additives, preservatives, and in the production of glass, detergents, and soaps. Despite its importance, excessive intake of potassium can be harmful and can lead to health problems such as hyperkalemia.