Question

If true enter 1, else enter 0.
The energy of the resonance hybrid may be more than that of any of the individual Lewis formula.

• A. 0

Answer 1

The correct option is A 0
The energy of the resonance hybrid is less than that of any of the individual Lewis formula. The resonance hybrid is more stable than the individual contributing structures. This is due to greater delocalization in the resonance hybrid than in the individual contributing structures. For example, the total energy of the resonance hybrid of benzene is lower than the total energy of either of the two classical kekule structures by about 36 kcal/mol.
However in some cases, the energy of the resonance hybrid may be more than that of any of the individual Lewis formula.This is specially true for antiaromatic compounds such as cyclobutadiene In these compounds, the resonance hybrid is less stable than the individual contributing structures.