Question

The most stable cannonical structure of this molecule is:

• A.
• B.
• C.
• D. All are equally stable

Answer 1

The correct option is C

The correct answer is option (c) because
is aromatic and has complete octet of all atoms. This is aromatic because it is cyclic, planar and 6 electron's system ($4\pi \stackrel{-}{e}{}^{\prime }s+2\stackrel{-}{e}$ from one negative charge), follows (4n+2) rule.