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Inductive Effect

For the given...

Question

For the given carbanion intermediate,
$R C H_{2} - - C H - C H_{2} - C l$
Choose the correct statement(s) :

R C H_{2}

group shows

- I

effect and hence stabilizes the carbanion.

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R C H_{2}

group shows

+ I

effect and hence destabilizes the carbanion.

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B r

group shows

+ I

effect and hence stabilizes the carbanion.

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C l

group shows

- I

effect and hence stabilizes the carbanion.

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Solution

The correct option is D $C l$ group shows $- I$ effect and hence stabilizes the carbanion.
$R C H_{2}$ group is an electron donating group and hence it shows $+ I$ effect. Since it is an electron donor, the negative charge on the carbanion increases and subsequently stability decreases.
$C l$ group is an electron withdrawing group and hence it shows $- I$ effect. Since it withdraws electrons, the negative charge on carbanion will get reduced and subsequently stability increases.

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Similar questions

R C H_{2} - - C H - C H_{2} - C l

R C H_{2} - + C H - C H_{2} - C l

{CH}_{3} - {CH}_{2} - {CH}_{2} - CH = CH - {CH}_{3}

C H_{3} - C H_{2}^{-}

C H_{2} = C H^{-}

C H \equiv - C

C H_{2} = C H - C H = C H_{2}

C H_{2} = C H - C N

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