The intermolecular forces of HClO are hydrogen bonds. Hydrogen bonds are a type of dipole-dipole interaction that occurs between a hydrogen atom covalently bonded to a highly electronegative atom (such as F, O, or N) and another electronegative atom. In the case of HClO, the hydrogen atom is covalently bonded to the chlorine atom, which is highly electronegative. The oxygen atom in the HClO molecule also has a partial negative charge, due to the electronegativity of the chlorine atom. This partial negative charge on the oxygen atom can interact with the partial positive charge on the hydrogen atom, forming a hydrogen bond.