Consider the following anions:(I) CF_{3}SO_{3 | vedclass

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(A) The leaving group ability is directly proportional to the stability of the conjugate base (anion) formed after leaving.$(I)$ $CF_{3}SO_{3}^{-}$ (T

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$I > II > IV > III$

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(A) The leaving group ability is directly proportional to the stability of the conjugate base (anion) formed after leaving.$(I)$ $CF_{3}SO_{3}^{-}$ (Triflate ion): Highly stable due to strong electron-withdrawing effect of $CF_{3}$ group and resonance stabilization.$(II)$ $C_{6}H_{5}SO_{3}^{-}$ (Tosylate/Besylate type): Stable due to resonance stabilization.$(III)$ $C_{6}H_{5}O^{-}$ (Phenoxide ion): Resonance stabilized but less stable than sulfonate ions.$(IV)$ $CH_{3}COO^{-}$ (Acetate ion): Resonance stabilized but the negative charge is on oxygen atoms with less delocalization compared to sulfonate ions.Thus,the order of leaving group ability is $I > II > IV > III$.

Consider the following anions:
$(I)$ $CF_{3}SO_{3}^{-}$
$(II)$ $C_{6}H_{5}SO_{3}^{-}$
$(III)$ $C_{6}H_{5}O^{-}$
$(IV)$ $CH_{3}COO^{-}$
When attached to $sp^{3}$-hybridized carbon,their leaving group ability in nucleophilic substitution reaction decreases in the order:

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Consider the following anions:$(I)$ $CF_{3}SO_{3}^{-}$$(II)$ $C_{6}H_{5}SO_{3}^{-}$$(III)$ $C_{6}H_{5}O^{-}$$(IV)$ $CH_{3}COO^{-}$When attached to $sp^{3}$-hybridized carbon,their leaving group ability in nucleophilic substitution reaction decreases in the order: