Question

The most stable resonating structure among the given structures is :

• A. $I$
• B. $II$
• C. $III$
• D. All are equally stable.

Answer 1

The correct option is C $III$

In structure $III$ there are maximum number of covelant bonds, and more the covelant bonds, more is the stability of that particular resonating structure.
so, option (c) is correct.