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

Question

The order of reactivities of methyl halides in the formation of Grignard reagent is (A) CH 3 I > CH 3 Br > CH 3 Cl (B) CH 3 Cl > CH 3 Br > CH 3 I (C) CH 3 Br > CH 3 Cl > CH 3 I (D) CH 3 Br > CH 3 I > CH 3 Cl

Tardigrade Admin · Accepted Answer

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

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

$C H_{3} I > C H_{3} B r > C H_{3} Cl$

$C H_{3} Cl > C H_{3} B r > C H_{3} I$

$C H_{3} B r > C H_{3} Cl > C H_{3} I$

$C H_{3} B r > C H_{3} I > C H_{3} Cl$

$C - I$ bond is weak as compared to $C - B r$ 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
$C H_{3} I > C H_{3} B r > C H_{3} Cl$

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

CH3​I>CH3​Br>CH3​Cl

CH3​Cl>CH3​Br>CH3​I

CH3​Br>CH3​Cl>CH3​I

CH3​Br>CH3​I>CH3​Cl

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 CH3​I>CH3​Br>CH3​Cl

$C H_{3} I > C H_{3} B r > C H_{3} Cl$

$C H_{3} Cl > C H_{3} B r > C H_{3} I$

$C H_{3} B r > C H_{3} Cl > C H_{3} I$

$C H_{3} B r > C H_{3} I > C H_{3} Cl$

$C - I$ bond is weak as compared to $C - B r$ 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
$C H_{3} I > C H_{3} B r > C H_{3} Cl$