H-F has the highest dipole moment. It's the differences in Electronegativity. F has the highest electronegative value possible against H which has a resonable electronegative value Electronegativity is in simple terms the ability of atoms to attract electrons, this increase along a period but dicrease down a group.-C C-H C-O H-N H-F I know the answer is H-F but I dont understand how that is...dipole moments are throwing me off.