`potassium` Related Article Results

Potassium (K) is a soft, silvery-white, highly reactive metallic element belonging to the alkali metals group, with an atomic number of 19 and the chemical symbol K. It is located in the fourth period and first group (1A) of the periodic table and is an essential element for living organisms. Classification and Basic Properties Potassium is a member of the alkali metals group in the periodic table. Like other elements in this group, it has a single valence electron in its outermost electron shel