1. Tardigrade
  2. Question
  3. Chemistry
  4. Carbonyl group has following resonating structures: (I) > overset+C - overset-O (II) > overset-C - overset+O (III) > C = O The correct order of stability of these structures is:

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Q. Carbonyl group has following resonating structures:
$(I) > \overset{+}{C} - \overset{-}{O} (II) > \overset{-}{C} - \overset{+}{O} (III) > C = O$
The correct order of stability of these structures is:

Chemical Bonding and Molecular Structure

Solution:

The resonating structure with minimum or no charge is more stable. Thus, the stability of $(III)$ is maximum. The structure $(I)$ is more stable than structure $(II)$ as the negative charge is present on more electronegative atom.