Final answer:
Water can hydrogen bond more effectively than hydrogen fluoride due to the presence of hydrogen bonding in water molecules but not in hydrogen fluoride molecules.
Step-by-step explanation:
Water can hydrogen bond more effectively than hydrogen fluoride because water molecules experience hydrogen bonding, while hydrogen fluoride molecules do not. Hydrogen bonding is a strong form of dipole-dipole interaction that occurs in molecules with an H atom bonded to an N, O, or F atom. The large difference in electronegativity between the hydrogen and oxygen atoms in water leads to a large partial positive charge on the hydrogen atom and a correspondingly large partial negative charge on the oxygen atom. This results in a strong dipole-dipole interaction and the formation of hydrogen bonds.