Chemistry - GOC Question with Solution | TestHub

Explanation Question:

Question is asking about the difference between total number of $\pi$ electrons and total number of delocalised $\pi$ electrons.

Concept: This question is based on resonance effect.

Solution:

(1) In compound (P) eight $\pi$ electrons are present

$\mathrm{x}=8$

(2) In compound (P) a and $\mathrm{b}\pi$ bond electrons are involved in conjugation ( $4\pi$ electrons)

$\mathrm{y}=4$

Then value of $(x-y)=8-4=4$

Final answer (4)

$\mathrm{X}=8$

$\mathrm{Y}=4$