Nitration of bromobenzene

1) Electron density

The case is very similar to that of chlorobenzene.

2) Relative reaction rate

Bromobenzene reacts 11 times slower than benzene. The case is very similar to that of chlorobenzene. Br is slightly less deactivating than Cl.

3) Substitution direction

Like Cl, bromine is an ortho-para director and the explanation is exactly the same.

Ortho substitution

Para substitution

Meta substitution

The energy diagrams of bromo- and chlorobenzene are very much alike.