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Q.
In which alkyl halide, $S_{N}2$ mechanism is favoured maximum
Haloalkanes and Haloarenes
Solution:
$S_{N}2$ Substitution nucleophilic bimolecular order of different alkyl halides. $1° >2° >3°
$
$S_{N}1$ Substitution nucleophilic unimolecular order of different alkyl halides , $3° > 2° 1°.$