CO2 is non polar because C has no lone pairs, so the structure is linear and hence dipole cancell each other SO2 has lone pair, so the structure is bent due to the repulsion and hence the structure has a net dipole moment, so polar. Solution CO2 is non polar because C has no lone pairs, so the structure is linear and hence dipole cancell each other SO2 has lone pair, so the structure is bent due to the repulsion and hence the structure has a net dipole moment, so polar..