NEET Sample Paper NEET Sample Test Paper-79

  • question_answer
    Nucleophilic reagents are the species that are negatively charged or have an electron rich atom. They are called Lewis base. Which of the following has highest nucleophilicity?

    A)  \[{{F}^{\Theta }}\]                             

    B)  \[O{{H}^{\Theta }}\]

    C)  \[CH_{3}^{\Theta }\]              

    D)  \[NH_{2}^{\Theta }\]

    Correct Answer: C

    Solution :

    Stronger the acid, weaker is the conjugate base or weaker is nucleophilicity. Order of acidic nature\[HF > {{H}_{2}}O > N{{H}_{3}} > C{{H}_{4}}\]and order of nucleophilicity \[\operatorname{C}{{\overset{\Theta }{\mathop{H}}\,}_{3}}>N{{\overset{\Theta }{\mathop{H}}\,}_{2}}>\overset{\Theta }{\mathop{OH}}\,>\overset{\Theta }{\mathop{F}}\,\]


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