Arrange from strongest to weakest attraction: a) polar and polar b) nonpolar and nonpolar c) polar molecule and ion d) ion and ion?

JosephV

d., c., a. and b. (Note - Polar bond will be stronger than non-polar bonds. There will be high Electronegativity difference between the atoms with polar bonds and vice versa for non polar bond. Polar bond can have dipole-dipole forces.)