Question

An aromatic compound follows (4n+2)$\pi$ rule, where n can not be

• A. $\frac{1}{2}$
• B. 3
• C. 2
• D. 1

Answer 1

The correct option is A $\frac{1}{2}$

According to Huckel rule, all aromatic compounds must have $(4n+2)\pi$-electrons where $n$ is an integer, i.e., $n=0,1,2,3,....$
Hence, option (a) is the correct answer.