An image is attached depicting the Lewis structure of HClO with the atoms arranged in that order. The result is a single bond between each atom. We can calculate the formal charge of each atom with the following formula:
Formal charge = (Valence electrons) - (electrons shared in bonds) - (non-bonded electrons)
H: Formal charge = 1 - 1 - 0 = 0
Cl: Formal charge = 7 - 2 - 4 = +1
O: Formal charge = 6 - 1 - 6 = -1
This structure is not the actual way these atoms arrange. The atoms will actually arrange in the order of H-O-Cl to form hypochlorous acid with a single bond between the three atoms and formal charges of 0 on each atom.
