Question

the structure of the compound or molecule helps predict the name of compound. given the binary molecule hcl, which statement does not follow the iupac nomenclature rules? a the hydrogen cation indicates that the compound is an acid. b the two nonmetals indicate that covalent naming rules apply. c the name of the anion predicts the name of the final molecule. d the lack of oxygen in the anion indicates the prefix \hydro-\ is used.

Explanation:

• HCl is a binary acid, so the presence of H⁺ classifies it as an acid (A follows rules).
• While H and Cl are nonmetals, when dissolved in water, HCl acts as an acid, so acid naming rules (not covalent molecular naming) apply here. Covalent naming would use prefixes like "mono-", which is not used for HCl as an acid.
• For binary acids, the anion (chloride) determines the suffix "-ic" in the acid name (hydrochloric acid), so C follows rules.
• Binary acids without oxygen in the anion use the "hydro-" prefix, which applies to HCl, so D follows rules.

Answer:

B. The two nonmetals indicate that covalent naming rules apply.