Question

Examine the following two structures for the anilinium ion and choose the correct statement from the ones given below

• A. II is not an acceptable canonical structure, because carbonium ions are less stable than ammonium ions.
• B. II is not an acceptable canonical structure, because it is non-aromatic.
• C. II is not an acceptable canonical structure, because the nitrogen has 10 valence electrons.
• D. II is an acceptable canonical structure.

Answer 1

Answer: (C)

$II$ is not acceptable canonical form, because the nitrogen atom has $10$ valence electron. Since $N$ does not have d-orbitals in its valence shell, therefore, its octet cannot be expanded.