Salts are ionic substances in chemistry. Most people think of salt as sodium chloride, which table salt is, and the ionic bonding of sodium ions and chloride ions produces sodium chloride. Because each chloride anion (Cl–) has one sodium cation (Na+), the chemical formula is NaCl (Fig. 1).
Table salt, also known as sodium chloride (NaCl), comprises an equal amount of sodium cations and chloride anions arranged in a three-dimensional structure.