Intermolecular Forces and Boiling Point (AP Chemistry)

How does the strength of intermolecular forces (IMF) affect a substance's boiling point?

• Stronger IMF leads to a lower boiling point.

• Stronger IMF leads to a higher boiling point.

• IMF has no effect on boiling point.

• Boiling point is only affected by intramolecular forces.

Which of the following gases is a polar molecule?

• Cl2

• F2

• HCl

• H2

What causes London Dispersion Forces (LDF) in nonpolar molecules?

• Permanent dipole-dipole interactions.

• Hydrogen bonding between molecules.

• Random motions of electrons creating temporary dipoles.

• Ionic attractions between charged particles.

Which gas would have a boiling point most similar to Argon (Ar)?

• Cl2

• F2

• H2

• HCl