question_answer

Which of the following molecules is least resonance stabilised?

A)                

B)

C)                

D)

Correct Answer: D

Solution :

[d] Aromatic compounds are stable than non-aromatics are due to resonance. Aromaticity can be determined by Huckel's rule according to which (or 4n + 2 rule), "a planar, cyclic compound is aromatic, when its \[\pi \]cloud must contain \[(4n+2)\pi \] electrons, where n is any whole number.