Question

between methyl iodide and methylbromide which undergoes faster SN2 reaction?

Answer 1

Answer:

Methyl iodide undergo faster reaction as compare to methyl bromide.

Explanation:

As Size Increases, the Ability of the Leaving Group to Leave Increases. If we move down the periodic table, size increases. With an increase in size, basicity decreases, and the ability of the leaving group to leave increases.

Conclusion:

As  the size of iodide is larger as compare to bromide, so it is good leaving group. So its reaction will be fast.