MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

According to H 00fcckel's rule, a cyclic, planar, and completely conjugated system is highly stable and aromatic if it contains (4n + 2) -electrons, where n is an integer (0, 1, 2, ). These -electrons reside in the cyclic -molecular orbital formed by the continuous lateral overlap of unhybridized p-orbitals of the atoms in the ring. Thus, the cyclic -molecular orbital must contain (4n + 2) p electrons for the system to exhibit aromatic stability.