Arrange these compounds from fastest sn2 reaction rate to slowest sn2 reaction rate.

Arrange these compounds from fastest SN2 reaction rate to
slowest SN2 reaction rate. Arrange these compounds from fastest Sg2 reaction rate to slowest Sn2 reaction rate. Fastest rate Slowest rate Answer Bank bromomethane 1-bromo-3-methylbutane 2-bromo-2-methylbutane 2-bromo-3-methylbutane

SN2 reaction rate will be faster for small alkyl halides
(methyl> primariy> secondary>>tertiary)
Hence, Bromomethane (primary)>
1-bromo-3-methylbutane(secondary less crowded)>2 bromo-3-methyl
butane(secondary more
crowded)>2-bromo-2-methylbutane(tertiary)
will be the correct order,