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  4. The order of reactivities of methyl halides in the formation of Grignard reagent is

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Q. The order of reactivities of methyl halides in the formation of Grignard reagent is

NTA AbhyasNTA Abhyas 2022Haloalkanes and Haloarenes

Solution:

$C - I$ bond is weak as compared to $C - Br$ and $C - Cl$, so alkyl iodide is more reactive.
Among alkyl halides, iodides are least stable, hence these form Grignard reagent easily.
Hence, the correct order of reactivity in formation of Grignard reagent is
$CH _{3} I > CH _{3} Br > CH _{3} Cl$