Which of the following ring compounds obeys H | vedclass

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

Question

(C) Huckel's rule states that for a planar,cyclic,conjugated system to be aromatic,it must contain $(4n + 2) \pi$ electrons,where $n$ is an integer $(

Vedclass · Accepted Answer

$C_4H_4^{-2}$

Vedclass · Answer

(C) Huckel's rule states that for a planar,cyclic,conjugated system to be aromatic,it must contain $(4n + 2) \pi$ electrons,where $n$ is an integer $(n = 0, 1, 2, ...)$.For $C_4H_4^{-2}$ (cyclobutadienyl dianion):$1$. It is a cyclic and planar system.$2$. It has one double bond ($2 \pi$ electrons) and two negative charges on adjacent carbons,each contributing a lone pair to the conjugation ($2 + 2 + 2 = 6 \pi$ electrons).$3$. Applying Huckel's rule: $4n + 2 = 6 \implies 4n = 4 \implies n = 1$.Since $n$ is an integer,$C_4H_4^{-2}$ is aromatic and obeys Huckel's rule.

Which of the following ring compounds obeys Huckel's rule?

Similar Questions

Which of the following statements is incorrect?

Which of the following is not an example of a benzenoid compound?

In the above reaction,' $X$ ' is:

The correct order of reactivity of the following compounds towards electrophilic substitution reactions is:

Hydrogenation of $C_6H_5CHOHCOOH$ over $Rh-Al_2O_3$ catalyst in methanol gives:

Vedclass Test Series

Exam Paper Generator

Online Exam Module