Question

24 mark for review in which of the following liquids do the intermolecular forces include dipole - dipole forces? a f₂(l) b ch₄(l) c cf₄(l) d ch₂f₂(l)

Explanation:

Dipole - dipole forces occur in polar molecules. $F_2$ is non - polar as it is a homonuclear diatomic molecule. $CH_4$ and $CF_4$ have symmetric tetrahedral geometries and are non - polar due to the cancellation of bond dipoles. $CH_2F_2$ is polar because the bond dipoles do not cancel out due to its asymmetric structure, so it has dipole - dipole forces.

Answer:

D. $CH_2F_2(l)$