JEE Main & Advanced Sample Paper JEE Main Sample Paper-45

  • question_answer
    Direction: The dissociation of complex may be expressed as \[{{[M{{L}_{x}}]}^{4+}}\,+xL\] and equilibrium constant of this is known as instability constant which is a measure of stability. The stability of complex depends on EAN of central atom, charge on metalion, basic nature of ligand and chelation.
    Which one of the following does not follow EAN rule?

    A)  \[Fe{{(CO)}_{5}}\]             

    B)  \[V{{(CO)}_{6}}\]

    C)  \[{{K}_{4}}[Fe{{(CN)}_{6}}]\]     

    D)  \[M{{n}_{2}}{{(CO)}_{10}}\]      

    Correct Answer: B

    Solution :

     EAN of V is 35. (EAN \[=23+6\times 2=35\])

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