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Introduction to Electrophilic Substitution

The most deac...

Question

The most deactivating group for electrophilic substitution reaction in benzene ring is

A

- C F_{3}

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B

- N O_{2}

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C

- O C H_{3}

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D

- C H O

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Solution

The correct option is A $- C F_{3}$
-CF3 is most deactivating group among all, because Florine is highly electronegative element and high tendency to attract the shared paired of electrons towards itself.

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