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- From 1 being the least reactive and 4 being the most reactive rank the following alkyk chlorides in terms of increasing reactivity via SN2 reaction mechanism.In which compound is the halogen substituted most rapidly by aq hydroxide ions? a. CH3CH2CH2CH2Cl b. (CH3)3CI c. (CH3)3CCl d. CH3CH2CH2CH2IDraw the three likely products of the following reaction. Identify the major product.