Problems and exercisesAromatic Halogenation
1. The chlorination diagram
Fill in the energy diagram of the chlorination of benzene with Cl2 and AlCl3, indicating whether the species are reactive intermediates (RI) or transition states (TS).

2. Why no iodination?
Direct iodination of benzene with I2 is not possible even with a catalyst. Why? How is it achieved?
3. Fluorine
Why is benzene not fluorinated with F2?