•II.Dipole-dipole
 forces: forces that operate when have ______ molecules.
 In general, the more polar the molecule (larger the difference
 in electronegativities), the stronger the forces. 
 •
 •These forces
 (dipole-dipole) are of the order of 5 to 20 kJ/mol. Cmpds that
 have these forces (dipole-dipole) are frequently