NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    The organic chloro compound which shows complete stereo chemical inversion during a \[{{S}_{N}}^{2}\]reaction is

    A)  \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHCl\]            

    B)  \[{{(C{{H}_{3}})}_{3}}CCl\]

    C)  \[{{(C{{H}_{3}})}_{2}}CHCl\]                

    D)  \[C{{H}_{3}}Cl\]

    Correct Answer: D

    Solution :

    Nucleophilic substitution bimolecular \[\left( {{S}_{N}}^{2} \right)\] prefers less sterically hindered site to attack. Lesser the steric windrance better the \[{{S}_{N}}^{2}\] reaction. So ease the reaction is \[{{1}^{o}}>{{2}^{o}}>{{3}^{o}}.\] \[{{S}_{N}}^{2}\]involves inversion of configuration stereo-chemically.


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