what type of intermolecular bonding would be expected between molecules of carbon monoxide and why?
3 answers
Carbon monoxide is a dipole with the carbon end being positive and the oxygen end being negative (You can tell which end is which by looking up the electronegativity values for C and O). Therefore, one would expect these dipoles to attract one another. We call that dipole-dipole bonding although these are not as strong as regular chemical bonds.
so when you look up the electronegativity values, the lower value is the positive end and the higher value is the negative end?
right. That is how you determine the polarity of a molecule (and whether a molecule is polar or not). Polar covalent bonds fit into the same discussion.