1.

Discuss the kekule structureof benezene

Answer»

SOLUTION :Kekulesuggestedthat benzeneconsistsof a cyclicstructureof sixcarbonwithaltermatesingleand doublebond.
(i)Benzeneformsonlyoneorthodisubstitutedproductswhereasthe KEKULE .sstructurepredictstwo ortho disubstituted productsas SHOWN.

(II) Kekulestructurefailedto explainwhybenzenewith threedoublebondsdidnotgiveadditionreactionlikealkenes
ToovercomethisobjectionKekulesuggestedthat benzenewasa resonancehybridoftwoformswhich arein rapidequilibrium.


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