JEE Main & Advanced Sample Paper JEE Main Sample Paper-31

  • question_answer
    For the following two complexes : \[A:{{[NiC{{l}_{6}}]}^{-4}}\] and  \[B:{{[NiC{{l}_{4}}]}^{2-}}\] The ratio of CFSE will be nearly:

    A) \[\frac{3}{2}\]          

    B)                                    \[\frac{4}{9}\]

    C) \[\frac{9}{4}\]                                   

    D) \[\frac{27}{8}\]

    Correct Answer: D

    Solution :

    For complex A: \[CFSE=-1.2\,\,{{\Delta }_{0}}\] For complex B: \[CFSE=-0.8\,\,{{\Delta }_{1}}\] Ratio of their \[CFSE=\frac{-1.2\,\,{{\Delta }_{0}}}{-0.8\,\,{{\Delta }_{t}}}\] \[\left( {{\Delta }_{t}}=\frac{4}{9}{{\Delta }_{0}} \right)\] \[=\frac{-1.2{{\Delta }_{0}}}{-0.8\left( \frac{4}{9}{{\Delta }_{0}} \right)}=\frac{27}{8}\]


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