Multiple Choice
Which type of intermolecular force is the strongest between molecules of CH3Cl?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
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Which intermolecular force is present in all polar molecules but not in nonpolar molecules?
A
Ionic bonding
B
Hydrogen bonding
C
London dispersion forces
D
Dipole-dipole forces
Verified step by step guidance1
Understand the types of intermolecular forces: Ionic bonding occurs between ions, hydrogen bonding is a special case involving H bonded to N, O, or F, London dispersion forces are present in all molecules, and dipole-dipole forces occur between polar molecules.
Recognize that London dispersion forces are present in both polar and nonpolar molecules because they arise from temporary fluctuations in electron distribution.
Note that hydrogen bonding is a specific, stronger type of dipole-dipole interaction but only occurs when hydrogen is bonded to highly electronegative atoms like N, O, or F.
Identify that dipole-dipole forces specifically arise from the attraction between the positive end of one polar molecule and the negative end of another polar molecule, so they are present in all polar molecules but absent in nonpolar molecules.
Conclude that the intermolecular force present in all polar molecules but not in nonpolar molecules is dipole-dipole forces.
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