BHU PMT BHU PMT (Screening) Solved Paper-2010

  • question_answer
    In which of the following pair, the EAN of central metal atom is not same?

    A) \[{{[Fe{{F}_{6}}]}^{3-}}\]and\[{{[Fe{{(CN)}_{6}}]}^{3-}}\]

    B) \[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}\]and\[{{[Cr{{(CN)}_{6}}]}^{3-}}\]

    C)  \[{{[Fe{{(CN)}_{6}}]}^{3-}}\]and\[{{[Fe{{(CN)}_{6}}]}^{4-}}\]

    D) \[Ni{{(CO)}_{4}}\]and\[{{[Fe{{(CN)}_{6}}]}^{4-}}\]

    Correct Answer: C

    Solution :

                     \[EAN\]of\[{{[Fe{{(CN)}_{6}}]}^{3-}}\] \[26-3+6\times 2=35\] \[EAN\]of \[{{[Fe{{(CN)}_{6}}]}^{4-}}\] \[26-2+6\times 2=36\]


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