Answer :
when two polar molecules are close together, the partial positive charge on one molecule will attract the partial charge on the other. this type of intermolecular force is called a dipole-dipole interaction.
Dipole- dipole forces are the attractive force between polar molecules of the positive end of one polar molecule and negative end of other polar molecule. A polar molecule have a partial positive end and partial negative end.
Example of dipole dipole interaction between polar molecules ios HCl ( hydrogen chloride ).
Thus, when two polar molecules are close together, the partial positive charge on one molecule will attract the partial charge on the other. this type of intermolecular force is called a dipole-dipole interaction.
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