1. The problem statement, all variables and given/known data: The correct relation is: A. x=y B. x>y C. x<y D. None. Please refer to picture attached. 2. Relevant equations: As stability increases, bond length decreases. When a Π bond is delocalised i.e it takes part in resonance, stability increases. 3. The attempt at a solution I think x takes part in resonance. Hence x is more stable than y. Thus x<y i.e C is correct option.