Answer:
The order will be:
Cl₂ < CH₃Cl < CH₃COOH < NaCl
Explanation:
More the polarity in a compound more the intermolecular interactions between the molecules.
Out of the given molecules, NaCl is the ionic compound and will have strong ion -ion interactions thus will have highest order of strength of intermolecular interactions.
Then CH₃COOH may also dissociate to give acetate ion and hydrogen ion thus it will also show ionic interactions but as it is a weak electrolyte it will have less interactions then NaCl
CH₃Cl is slightly more polar than Cl₂ (which is non polar so will have only london dispersion forces which are weakest intermolecular interactions), so CH₃Cl will have dipole dipole interactions
The order will be:
Cl₂ < CH₃Cl < CH₃COOH < NaCl
