Chunks of potassium metal

Chunks of potassium metal

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Caption: Potassium. View of chunks of the metal potassium, one of the chemical elements. Potassium is a soft, highly- reactive alkali metal. At room temperature it oxidises in air and reacts violently with water, so it has to be covered with a film of oil. Potassium is never found in its natural state but as part of a compound. Potassium is the eighth- commonest element found in the Earth's crust, and it is also found in plant and animal tissue. Potassium compounds are used in a variety of industrial processes and are essential for living organisms. It has the chemical symbol K, an atomic number of 19 and an atomic weight of 39.098.

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Keywords: alkali metal, chemical, chemistry, element, metal, potassium

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