Question

Choose the correct stability order of the given resonating structures :

• A. $C>B>A>D$
• B. $D>C>B>A$
• C. $A>B>C>D$
• D. $D>B>C>A$

Answer 1

The correct option is C $A>B>C>D$

Structure A and B have maximum number of covalent bonds as compared to structure C and D. So, A and B are more stable than C and D.
Between A and B ,
Structure A is more stable since it is neutral (no formal charges) and all atoms have a complete octet. So, A>B

Between C and D
In structure D the negative charge is on electropositive atom (carbon) and positive charge on electronegative atom (oxygen) making it the less stable than structure C. So, C>D

Correct order is $A>B>C>D$