Among the options provided, the correct answer is c) NH4CN.
Explanation: To determine if a compound is ionic, we look for a combination of metals and nonmetals. Ionic compounds typically consist of a cation (positive ion) and an anion (negative ion). In this case:
- a) CH3OH (Methanol) – This is a molecular compound made entirely of nonmetals.
- b) HOCLO (Hypochlorous acid) – This is also a molecular compound that does not have ionic bonds.
- c) NH4CN (Ammonium cyanide) – This compound contains the ammonium ion (NH4+), which is a cation, and the cyanide ion (CN–), which is an anion, making it an ionic compound.
- d) NH3 (Ammonia) – This compound consists of nitrogen and hydrogen and forms covalent bonds between them.
- e) N2O3 (Dinitrogen trioxide) – This compound is molecular, composed of nonmetals only.
Thus, the only option that qualifies as an ionic compound is NH4CN.