Final answer:
The correct arrangement of atoms in hypochlorous acid, based on formal charge considerations, is HOCl, as it ensures the lowest possible formal charges on the atoms. The correct option is a.
Step-by-step explanation:
Based on formal charge considerations, the correct arrangement of atoms in hypochlorous acid would likely be HOCl.
This is due to the fact that the hypochlorite ion, OCl⁻, is known to have the negative charge localized on the oxygen atom, indicating that in the neutral hypochlorous acid molecule, hydrogen would be bonded to oxygen, making the molecule HOCl. This ensures that each atom has the lowest possible formal charge, which is more favorable in terms of stability for the molecule.
Hence, Option a is correct.