The chemical symbol for sodium chloride is NaCl. Sodium chloride is a compound made up of two elements: sodium (Na) and chlorine (Cl). Sodium is a metal that carries a positive charge, while chlorine is a non-metal that carries a negative charge. When these two elements combine, they form an ionic bond, resulting in a stable compound that is commonly known as table salt. Sodium chloride is widely used in food seasoning and preservation and plays essential roles in various biological functions, including regulating fluid balance and nerve transmission in living organisms.