For which of the following molecules would the intermolecular forces be influenced mainly by dipole-dipole forces?

PH3
CH3OHO
HF
C2H5OH
CH3COCH3

how do I determine this

1 answer

What's CH3OHO? a typo perhaps?
HF yes
C2H5OH but to a much smaller extent. Both HF and C2H5OH have hydrogen bonds but they are dipoles also.