Total number of compounds in which resonance is not possible:

Compounds 1,3, 4,8 and 9 does not exhibit resonance.In (1) and (9), lone pairs are not in conjugation with any system (i.e.,=, ≡,+ve or - ve).In (3) and (4) + ve charge and - ve charge not in conjugation with double bond respectively.In (8) lone pair of electrons on Cl atom, not in conjugation with double bond.