Two statements, one Assertion and the other Reason are given. Choose the correct option. Assertion: Heterocyclic compounds like Pyridine and Thiophene are non-aromatic compounds. Reason: According to Huckel rule for a given compound to exhibit aromaticity, the molecule must be planar, cyclic system having delocalised (4 n+2) electrons.

Step-by-step solution

Assertion is incorrect: Pyridine and Thiophene are well-known aromatic compounds. Pyridine has 6 delocalized electrons (3 double bonds), and Thiophene has 6 delocalized electrons (2 double bonds + lone pair of S). Both satisfy Huckel's rule and are aromatic. Reason is correct: Huckel's rule states that a planar, cyclic, fully conjugated system with (4n+2) electrons is aromatic. Reason is correct but Assertion is incorrect.