Question

Acylium cation has two resonating structures (I) and (II).

Which statement is correct for (I) and (II)?

• A. $\left(I\right)ismorestablethan\left(II\right)$
• B. $Stabilityof\left(II\right)ismorethen\left(I\right)$
• C. $Bothhavesamestability$
• D. $Noneofthese$

Answer 1

The correct option is B $Stabilityof\left(II\right)ismorethen\left(I\right)$

The resonating structure in which positive charge is present in the less electronegative atom is more stable. Since C is less electronegative than O, the positive charge present on C will make the resonating structure more stable. So I should be more stable than II.

But in case of structure 2 octate of every atom is complete so structure 2 is more stable than 1.