WB JEE Medical WB JEE Medical Solved Paper-2013

  • question_answer
    Which of these is least likely to act as a Lewis base?

    A)  CO             

    B)  \[{{F}^{-}}\]

    C) \[B{{F}_{3}}\]              

    D)  \[P{{F}_{3}}\]                

    Correct Answer: C

    Solution :

     Electron rich species are called Lewis base. Among the given, \[B{{F}_{3}}\]is an electron deficient species, so have­­ a capacity of electron accepting instead of donating thats why it is least likely to act as a Lewis base. It is a Lewis acid.


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