Which of the following is aromatic?

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

Question

(D) Aromatic compounds must follow $H$ückel's rule,which states that the molecule must be cyclic,planar,fully conjugated,and contain $(4n+2) \pi$ elec

Vedclass · Accepted Answer

Naphthalene

Vedclass · Answer

(D) Aromatic compounds must follow $H$ückel's rule,which states that the molecule must be cyclic,planar,fully conjugated,and contain $(4n+2) \pi$ electrons,where $n$ is an integer $(n=0, 1, 2, ...)$.$A$. Cyclopentadiene is non-aromatic because it has an $sp^3$ hybridized carbon atom.$B$. $4H$-Pyran is non-aromatic due to the presence of an $sp^3$ hybridized carbon atom.$C$. The structure shown is a borabenzene derivative or a related cyclic system that does not satisfy the $(4n+2) \pi$ electron rule for aromaticity.$D$. Naphthalene is a polycyclic aromatic hydrocarbon. It is planar,fully conjugated,and contains $10 \pi$ electrons,which satisfies the $(4n+2) \pi$ rule for $n=2$ $(4(2)+2 = 10)$.Therefore,naphthalene is aromatic.

Similar Questions

Which product is obtained by the oxidation of ethylbenzene with $KMnO_4$?

Which of the following compounds will undergo electrophilic substitution more readily than benzene?

Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is:
$-COOCH_3$,$-NHCOCH_3$,$-NHCH_3$,$-CN$,$-OCH_3$

Give the reaction for $n$-hexane reacting in the presence of a catalyst (aromatization).

The enthalpy of hydrogenation of benzene is $\Delta H_1$ and for cyclohexene is $\Delta H_2$. Then the resonance energy of benzene is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module