Which one of the following is an aromatic compound ?

1.	Which one of the following is an aromatic compound ?
Answer» Cyclopentadienyl cation Cycloheptatrienyl cation Cycloheptatrienyl anion Cycloheptatriene Solution :Cycloheptatrienyl cation contains COMPLETELY delocalized 6 `pi`-ELECTRONS in a cyclic system and HENCE is AROMATIC according to Huckel's rule.

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