Question

According to Huckel's rule, the number of π electrons to be taken while determining aromaticity in case of

• A. 6 and 8
• B. 6 and 4
• C. 8 and 8
• D. 8 and 4

Answer 1

The correct option is A

6 and 8

Huckel's Rule??

Yeah, this is the rule which we have to apply to determine aromaticity.

(4n+2)

Here n is a natural number.

[lone pair is not a part of the conjugation]

This is 4(1) + 2 = 6, where n = 1. So this will be aromatic.

[only one lone pair of Sulphur takes part in the conjugation]

This is 4(1.5) + 2 = 6, where n = 1.5

Since we are not getting n to be a natural number, this compound will not be aromatic.