Which of the following is an aromatic compoun | vedclass

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(A) According to Huckel's rule,for a compound to be aromatic,it must be planar,cyclic,fully conjugated,and contain $(4n + 2)\pi$ electrons,where $n =

Vedclass · Accepted Answer

Cyclopropenyl cation

Vedclass · Answer

(A) According to Huckel's rule,for a compound to be aromatic,it must be planar,cyclic,fully conjugated,and contain $(4n + 2)\pi$ electrons,where $n = 0, 1, 2, ...$.$(A)$ Cyclopropenyl cation has $2\pi$ electrons $(n=0)$,which satisfies the $(4n + 2)\pi$ rule. It is aromatic.$(B)$ Cyclopentadienyl cation has $4\pi$ electrons,which follows the $4n\pi$ rule,making it anti-aromatic.$(C)$ Cyclobutadiene has $4\pi$ electrons,which follows the $4n\pi$ rule,making it anti-aromatic.$(D)$ Cyclopropenyl anion has $4\pi$ electrons,which follows the $4n\pi$ rule,making it anti-aromatic.Therefore,the correct option is $(A)$.

Which of the following is an aromatic compound?

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