Which of the following is aromatic?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) compound is aromatic if it is cyclic,planar,fully conjugated,and follows $H$ückel's rule ($4n+2$ $\pi$ electrons).$A$. Cyclopropenyl anion has $4$

Vedclass · Accepted Answer

Pyrylium cation

Vedclass · Answer

(D) compound is aromatic if it is cyclic,planar,fully conjugated,and follows $H$ückel's rule ($4n+2$ $\pi$ electrons).$A$. Cyclopropenyl anion has $4$ $\pi$ electrons ($2$ from the double bond and $2$ from the lone pair on the carbon atom),which is anti-aromatic.$B$. Cyclopentadienyl cation has $4$ $\pi$ electrons,which is anti-aromatic.$C$. Pyridine is a heterocyclic aromatic compound with $6$ $\pi$ electrons.$D$. Pyrylium cation is a heterocyclic aromatic compound with $6$ $\pi$ electrons.Both $C$ and $D$ are aromatic. However,based on the provided solution image,the question specifically highlights the pyrylium cation structure.

Similar Questions

In $FCR$ (Friedel-Crafts Reaction),toluene can be prepared by which of the following?

Benzene on treatment with a mixture of conc. $HNO_3$ and conc. $H_2SO_4$ at $100 \ ^oC$ gives

Which of the following is true about the following groups when attached to a benzene ring?

Which of the following is/are produced when a mixture of benzene vapour and oxygen is passed over $V_2O_5$ catalyst at $775\, K$?

Which of the following statements are correct?
$I$. In nitrating mixture,nitric acid participates as an acid.
$II$. $\sigma$-complex is the intermediate substance in electrophilic substitution of benzene.
$III$. Benzene on Friedel-Crafts alkylation with $n$-propyl chloride gives isopropyl benzene.

Vedclass Test Series

Exam Paper Generator

Online Exam Module