Part D: Naming Acids (an ionic compound with H+ as your "metal An acid, is a type of an ionic compound in that it contains a metal ion (always H+) and a nonmetal ion (monatomic or polyatomic). The name of the acid therefore depends on the kind of nonmetal that combines with the hydrogen ion. The rules are: - D1: Given the Molecular Formula, Name the Acid: Ask: what kind of nonmetal is in the acid, is it a monatomic or polyatomic HCl The nonmetal is monatomic: use rule: hydro ic acid Since the nonmetal is chlorine, the name is hydrochloric acid. H2CO3 The nonmetal is polic acid The nonmetal is polyatomic (carbonate)ending in ate: Use the rule ic acid. (There is no "hydro") the name is carbonic acid. 62. HNO2 63. H3PO3 64. H3PO4 65. H3P