Which of the two structures A and B given below is more stabilised by resonance? Explain . {:( CH_(3) COOH ," and ", CH_(3) COO), (A,"" ,B):}

Which of the two structures A and B given below is more stabilised by

1.	Which of the two structures A and B given below is more stabilised by resonance? Explain . {:( CH_(3) COOH ," and ", CH_(3) COO), (A,"" ,B):}
Answer» Solution :Resonating structures of A and B are as follows ` square ` II is more stable than structure I. because later carriesseparation of positive and NEGATIVE charges . `square ` The contribution of structure II is LESS than that of I . ` square ` On the contrary , structure III and IV are of equal energy and HENCE contribute equally towards the RESONANCE hybrid of compound B . ` squaretherefore ` Structure (B) is more stable than (A) .