Punjab Medical Punjab - MET Solved Paper-2011

  • question_answer
    Which of the following is an example of coordination isomerism?

    A) \[[Co{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{2}}Cl]B{{r}_{2}}\]

    B) \[[Co{{(N{{H}_{3}})}_{6}}][Cr{{({{C}_{2}}{{O}_{4}})}_{3}}]\]

    C) \[[Co{{(N{{H}_{3}})}_{5}}N{{O}_{3}}]S{{O}_{4}}\]

    D) \[[Pt{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]B{{r}_{2}}\]

    Correct Answer: B

    Solution :

    Coordination isomerism occurs when both cation and anion are complex. This isomerism is caused by the interchange of ligands between the two complex ions, e.g.,                 \[[Co{{(N{{H}_{3}})}_{6}}][Cr{{({{C}_{2}}{{O}_{4}})}_{3}}]\]                 \[[Cr{{(N{{H}_{3}})}_{6}}][Co{{({{C}_{2}}{{O}_{4}})}_{3}}]\]


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