What will be the order of reactivity of the following carbonyl compounds with Grignard's reagent?

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What will be the order of reactivity of the following carbonyl compounds with Grignard's reagent?

ChemistryAldehydes and KetonesVITEEEVITEEE 2014

Options:

A $\quad \mathrm{I}>\mathrm{II}>\mathrm{III}>\mathrm{IV}$
B $\quad \mathrm{IV}>\mathrm{III}>\mathrm{II}>\mathrm{I}$
C $\quad \mathrm{II}>\mathrm{I}>\mathrm{IV}>\mathrm{III}$
D $\quad \mathrm{III}>\mathrm{II}>\mathrm{I}>\mathrm{IV}$

Solution:

2027 Upvotes Verified Answer

The correct answer is: $\quad \mathrm{I}>\mathrm{II}>\mathrm{III}>\mathrm{IV}$

As the number and the size of the alkyl groups increases, reactivity decreases. Hence, the correct order of reactivity is

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