Question

Among the intermolecular forces, which forces are typically the weakest?
dipole-dipole interactions
hydrogen bonds
dipole-induced dipole interactions
London dispersion forces

Answer 1

London dispersion forces.

They arise from instantaneous induced dipoles and are generally the weakest of the listed intermolecular forces (weaker than dipole-dipole, dipole‑induced dipole, and especially hydrogen bonds), though they can become significant in large, highly polarizable molecules.