[1 good kid]

Explain why the alkyl halides listed below would be expected to react in the order shown by an SN2 mechanism under identical reaction conditions.

CH3CH2CH2Br > (CH3)2CHBr


CH3CH2CH2CH2I > CH3CH2CH2CH2Cl


CH3CH2CH2CH2Cl >  (CH3)2CHCH2Cl


(CH3)2CHCH2CH2Cl > CH3CH2CH(CH3)CH2Cl


CH3CH2CH2CH2CH2Cl > C6H5Cl

[Donaldson Tan]

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