Question

The number of activating and deactivating groups of the following are respectively: \[ -OCH_2CH_3, -COCH_3, -NHCOCH_3, -COOCH_3, -SO_3H \]

• A. 2, 3
• B. 3, 2
• C. 1, 4
• D. 4, 1

Hint:

Activating groups donate electrons and increase electrophilic substitution, while deactivating groups withdraw electrons and reduce reactivity.

Answer 1

The Correct Option is A

Activating groups: Electron-donating groups increase reactivity, such as -OCH2CH3 and -NHCOCH3. Deactivating groups: Electron-withdrawing groups decrease reactivity, such as -COCH3, -COOCH3, and -SO3H. Thus, the number of activating groups = 2 and deactivating groups = 3.