i. $M e_{3} C O^{⊖}$
ii. $M e O^{⊖}$
iii. $M e C H_{2} O^{⊖}$
iv. $M e_{2} C H O^{⊖}$
v. Refer image.
The decreasing order of ${S N}_{2}$ reactivity of alkoxide nucleophiles:

(i) > (i v) > (v) > (i i i) > (i i)

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(i i) > (i i i) > (v) > (i v) > (i)

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(i) > (v) > (i v) > (i i i) > (i i)

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(i i) > (i i i) > (i v) > (v) > (i)

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Solution

The correct option is D $(i i) > (i i i) > (i v) > (v) > (i)$
The decreasing order is $(i i) > (i i i) > (v) > (i v) > (i)$
As the number of methyl groups increases , the reactivity of alkoxide nucleophiles decreases due to increase in the steric hinderance.

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Similar questions

Predict the order of reactivity of the following compounds in dehydrohalogenation.

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i. Me3CO⊖ii. MeO⊖iii. MeCH2O⊖iv. Me2CHO⊖v. Refer image.The decreasing order of SN2 reactivity of alkoxide nucleophiles:

The correct option is D (ii)>(iii)>(iv)>(v)>(i)The decreasing order is (ii)>(iii)>(v)>(iv)>(i)As the number of methyl groups increases , the reactivity of alkoxide nucleophiles decreases due to increase in the steric hinderance.

i. $M e_{3} C O^{⊖}$
ii. $M e O^{⊖}$
iii. $M e C H_{2} O^{⊖}$
iv. $M e_{2} C H O^{⊖}$
v. Refer image.
The decreasing order of ${S N}_{2}$ reactivity of alkoxide nucleophiles:

The correct option is D $(i i) > (i i i) > (i v) > (v) > (i)$
The decreasing order is $(i i) > (i i i) > (v) > (i v) > (i)$
As the number of methyl groups increases , the reactivity of alkoxide nucleophiles decreases due to increase in the steric hinderance.