First of all, I must assume that PO4 is actually (PO4)2-, the phosphate ion, since no PO4 molecule exists. Thus, any intermolecular forces would arise between the ion and what it might be formed in, such as when a soluble phosphate is dissolved in water. That would lead to ion-dipole forces.
As for the others, they are all molecular compounds and would all possess London Dispersion Forces (LDFs). Of those, all but the SO2 are symmetrical, so they are not polar. Hence, they possess only LDFs. The SO2 is a bent molecule and would be polar so, in addition to its LDFs it would also display dipole-dipole interactions.