A) \[-C\equiv N\]
B) \[-S{{O}_{3}}H\]
C) \[-COOH\]
D) \[-N{{O}_{2}}\]
Correct Answer: D
Solution :
The deactivating tendency of given groups follows the order \[-N{{O}_{2}}>-S{{O}_{3}}H>-C\equiv N>-\overset{O}{\mathop{\overset{|\,|}{\mathop{C}}\,}}\,-OH\] Thus, \[-N{{O}_{2}}\]is the most deactivating group.
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