Potassium reacts violently with cold water.
Potassium is the first element in the periodic table’s fourth period. Potassium has an atomic mass of 39.098 atomic mass units. Potassium is derived from a substance known as Potash. For hundreds of years, the element has been in use. Along with lithium, rubidium, sodium, caesium, and francium, it is an alkali metal. It is a very active metal that is never found alone in nature; instead, it forms compounds with other components.