The correct formula for hypochlorous acid is HClO. This compound consists of one hydrogen atom, one chlorine atom, and one oxygen atom.
Regarding its classification, hypochlorous acid is considered a molecular compound. Unlike ionic compounds, which are formed through the transfer of electrons between metals and nonmetals leading to the formation of ions, molecular compounds result from the sharing of electrons between nonmetals. In the case of hypochlorous acid, the bonding involves covalent bonds between the hydrogen, chlorine, and oxygen atoms.