The chemical system that is non-aromatic is

1.	The chemical system that is non-aromatic is
Answer» Solution :Compound (C ) has no `pi`-electrons and hence is not aromatic. Further, compound SHOWN in option (d) is called azulene in which both the RINGS have six `pi`-electrons and hence it is an aromatic compound. So are BENZENE (a) and naphthalene (b).

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