Question

Activating and deactivating group?

Answer 1

Activating substituents favour electrophilic substitution about the ortho and para positions. Weakly deactivating groups direct electrophiles to attack the benzene molecule at the ortho- and para- positions, while strongly and moderately deactivating groups direct attacks to the meta- position.

Answer 2

Answer:

activating groups are electron-donating (relative to H), and. deactivating groups are electron-withdrawing (relative to H)