Question

Which of the following resonance structures is the major contributor to the resonance hybrid?

• A. $I$
• B. $II$
• C. Both have equal contribution
• D. They are not resonance structures

Answer 1

The correct option is A $I$

$I$ is stable and is the major contributor to resonance hybrid as the $e^{-}$ donating group $(-CH)$ is having a positive charge.

But in $II$, the electronegative atom is having a positive charge which makes it unstable.