Chemistry - GOC Question with Solution | TestHub

Under the paper's canonical-drawing convention, aniline has two neutral Kekulé drawings and three charge-separated contributors from N donation to its two ortho and one para ring sites, so P=5. Anilinium has no N lone pair for that donation and only the two Kekulé ring drawings, Q=2. P+Q=7. These are resonance contributors, not separate molecules.