For the following bond cleavages, use curved-arrows to show the electron flow and classify each as homolysis or heterolysis. Identify reactive intermediate produced as free radical, carbanion and carbocation.

Cyclohexa -$2,5$-dien -$1$-one exists mainly in enol form. Which factor accounts for the stability of its enol form?

Draw all the resonating structures of the following compound:

Benzene

Draw all the resonating structures of the following compound:

Naphthalene

Draw all the resonating structures of the following compound:

Anthracene

Draw all the resonating structures of the following compound:

Phenanthrene