Concept explainers
(a)
Interpretation:Benzene, pyridine and pyrimidine should be represented as hybrids of two contributing structures using curved arrows.
Concept Introduction: The representation of a compound by more than one Lewis structure and the actual structure is said to be the hybrid of all these structures, then the compound is said to possess resonance. The actual structure of the compound is the resonance hybrid.
(b)
Interpretation: Benzene, pyridine and pyrimidine should be shown to has an aromatic sextet.
Concept Introduction: The compounds that contain alternate single and double bonds in the chemical structure and are planar that is all the
(c)
Interpretation:The bond angles and shape of pyridine and pyrimidine should be determined.
Concept Introduction: The compounds that contain alternate single and double bonds in the chemical structure and are planar that is all the
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