Sodium (Na) is a chemical element of atomic number (Z) 11, group 1, period 3, and atomic weight 22.990. The Sodium (Na) is a soft metal, reactive and with a low melting point that is the most important of all the alkaline metals, used in making esters and in the manufacture of organic compounds. Sodium is also a component of sodium chloride (NaCl). (Refer to the Chemical Element; Periodic Table)
Related Definitions in the Project: The Element and Substance
