The ring systems having following characteristics are aromatic. i Planar ring containing

The ring systems having following characteristics are aromatic. i Planar ring containing conjugated pi bonds . ii complete dolocalisation of the pi -electron in ring system i.e. each atom in the ring has unbybridised p-orbital and iii Presence of 4n2pi-electrons in the ring where n is an integern 0 1 2 ....... Huckel rule. Using this information classify the following compounds as aromaticnon-aromatic.,

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