Discovery of benzene

Addition of bromine to benzene:
What catalyst is needed to add benzene?
Substitution or addition reaction?

Why does benzene undergo substitution with Br2 while cyclohexene undergoes an addition reaction?

Resonance energy of Benzene

Resonance structures of benzene

Structure of Benzene

Failure of Resonance Picture

What are the MO rules for benzene?

Draw out MOs for Benzene

First MO of benzene

Intermediate MO of benzen

All antibonding MO of benzene

Describe the energy diagram of benzene

Draw MO of cyclobutadiene