Potassium (K) is a chemical element with atomic number (Z) 19, group 1, period 4, and atomic weight 39.098. The Potassium (K) is a soft, silvery-white metal, member of the alkali group of the periodic chart. Most potassium (95 %) use to fertilizers and the rest use mainly into making potassium hydroxide (KOH). (Refer to the Chemical Element; Periodic Table)
