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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.
HCl molecules, for example, have a dipole moment because the hydrogen atom has a slight positive charge and the chlorine atom has a slight negative charge. Because of the force of attraction between oppositely charged particles, there is a small dipole-dipole force of attraction between adjacent HCl molecules.The dipole-dipole interaction in HCl is relatively weak; only 3.3 kJ/mol.(The covalent bonds between the hydrogen and chlorine atoms in HCl are 130 times as strong.) The force of attraction between HCl molecules is so small that hydrogen chloride boils at -85.0 o C. Dipole-Induced Dipole Forces.nduced Dipole-Induced Dipole Forces. Neither dipole-dipole nor dipole-induced forces can explain the fact that helium becomes a liquid at temperatures below 4.2 K. By itself, a helium atom is perfectly symmetrical.