Question

what is the strongest type of intermolecular force present in ch₃f?
ion - dipole
dispersion
dipole - dipole
hydrogen bonding
none of the above
you can use this periodic table during the quiz. however, as stated in the course outline, and in the orientation session, this quiz is not open book. you cannot access course material while you write the quiz. nor can you google your answers, work as a group, use a cheat sheet, etc.

Explanation:

CH₃F is a polar molecule (C-F bond is polar, and the tetrahedral shape doesn’t cancel the dipole moment). It has no ions (so no ion-dipole), no H bonded to N/O/F (so no hydrogen bonding). Dispersion forces exist but are weaker than dipole-dipole. Thus, the strongest intermolecular force is dipole-dipole.

Answer:

dipole-dipole