Identify the type of electromeric effect (E-e | vedclass

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(C) The electromeric effect ($E$-effect) is the complete transfer of a shared pair of $\pi$-electrons to one of the atoms joined by a multiple bond on

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$(a)$ is $-E$ effect and $(b)$ is $+E$ effect

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(C) The electromeric effect ($E$-effect) is the complete transfer of a shared pair of $\pi$-electrons to one of the atoms joined by a multiple bond on the demand of an attacking reagent.$1$. In reaction $(a)$,the attacking reagent is a nucleophile $(CN^{-})$. The $\pi$-electrons move away from the attacking reagent,which is characteristic of the negative electromeric effect ($-E$ effect).$2$. In reaction $(b)$,the attacking reagent is an electrophile $(H^{+})$. The $\pi$-electrons move towards the attacking reagent,which is characteristic of the positive electromeric effect ($+E$ effect).Therefore,$(a)$ represents the $-E$ effect and $(b)$ represents the $+E$ effect.

Identify the type of electromeric effect ($E$-effect) in the following reactions:
$(a) >C=C< + CN^{-} \to -C(CN)-C^{-}-$
$(b) >C=C< + H^{+} \to -C^{+}-CH-$

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Identify the type of electromeric effect ($E$-effect) in the following reactions:$(a) >C=C< + CN^{-} \to -C(CN)-C^{-}-$$(b) >C=C< + H^{+} \to -C^{+}-CH-$