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BCECE Engineering BCECE Engineering Solved Paper-2012

  • question_answer
    Which one of the following ionic species has the greatest proton affinity to form stable compound?

    A)  \[H{{S}^{-}}\]   

    B)         \[NH_{2}^{-}\]

    C)         \[{{F}^{-}}\]                      

    D)         \[{{I}^{-}}\]

    Correct Answer: C

    Solution :

    Proton affinity i.e., basicity depends upon the strength of H-A bond (where,\[A=S,N,F,I\]). \[{{F}^{-}}\]forms the strongest bond. So, it has the greatest proton affinity to form hydride.


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