Conjugation of electron withdrawing groups- e-g- -CHO- O - - C -R - O - - C -OR - -C- N- -N O 2 activates nucleophilic attack in halobenzene- The order of reactivity of these groups is-

The correct option is A N O _ 2 > C≡ N> O || C H > O || C R > O || ...

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Standard XII

Chemistry

Scales of Electronegativity

Conjugation o...

Question

Conjugation of electron withdrawing groups, e.g., $- C H O, \begin{matrix} O | | - & C & - R \end{matrix}, \begin{matrix} O | | - & C & - O R \end{matrix}, - C \equiv N, - N O_{2}$ activates nucleophilic attack in halobenzene. The order of reactivity of these groups is:

- N O_{2} > - C \equiv N > \begin{matrix} O | | - & C & - H \end{matrix} > \begin{matrix} O | | - & C & - R \end{matrix} > \begin{matrix} O | | - & C & - O R \end{matrix}

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\begin{matrix} O | | - & C & - H \end{matrix} > \begin{matrix} O | | - & C & - R \end{matrix} > \begin{matrix} O | | - & C & - O R \end{matrix} > - C \equiv N > - N O_{2}

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- C \equiv N > - N O_{2} > \begin{matrix} O | | - & C & - H \end{matrix} > \begin{matrix} O | | - & C & - R \end{matrix} > \begin{matrix} O | | - & C & _O R \end{matrix}

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\begin{matrix} O | | - & C & - H \end{matrix} > - N O_{2} > - C \equiv N > \begin{matrix} O | | - & C & - O R \end{matrix} > \begin{matrix} O | | - & C & - R \end{matrix}

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Solution

The correct option is A $- N O_{2} > - C \equiv N > \begin{matrix} O | | - & C & - H \end{matrix} > \begin{matrix} O | | - & C & - R \end{matrix} > \begin{matrix} O | | - & C & - O R \end{matrix}$
Conjugation of electron withdrawing groups, e.g., $- C H O, \begin{matrix} O | | - & C & - R \end{matrix}, \begin{matrix} O | | - & C & - O R \end{matrix}, - C \equiv N, - N O_{2}$

activates nucleophilic attack in halobenzene.

The order of reactivity of these groups is
$- N O_{2} > - C \equiv N > \begin{matrix} O | | - & C & - H \end{matrix} > \begin{matrix} O | | - & C & - R \end{matrix} > \begin{matrix} O | | - & C & - O R \end{matrix}$ .

The electron withdrawing power of nitro group is maximum and the electron withdrawing power of ester group is minimum.

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Conjugation of electron withdrawing groups, e.g., −CHO,O||−C−R,O||−C−OR,−C≡N,−NO2 activates nucleophilic attack in halobenzene. The order of reactivity of these groups is:

Conjugation of electron withdrawing groups, e.g., $- C H O, \begin{matrix} O | | - & C & - R \end{matrix}, \begin{matrix} O | | - & C & - O R \end{matrix}, - C \equiv N, - N O_{2}$ activates nucleophilic attack in halobenzene. The order of reactivity of these groups is: