1.

Arrange the following in order of decreasing reactivity towards S_(N^(2)) reactions: CH_(3)CH_(2)CH_(2)Cl(I),CH_(3)CH_(2)-CHCl-CH_(3)(II)(CH_(3))_(2)CHCH_(2)Cl(III),(CH_(3))_(3)C-Cl(IV)

Answer»

IgtIIIgtIIgtIV
IIIgtIVgtIIgtI
IIgtIgtIIIgtIV
IVgtIIIgtIIgtI

Solution :Towards `S_(N^2)` REACTION mechianism, the order of reactivity of alkyl HALIDES is primarygtsecondarygttertiary. The STERIC HINDRANCE has also adverse effect on the reactivity. In the LIGHT of this it is the correct decreasing order.


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