NEET Chemistry NEET PYQ-Coordination Chemistry

  • question_answer
    Which of the following does not show optical isomerism?         (en = ethylenediamine)        [AIPMT (S) 2009]

    A) \[\text{1g}{{\text{m}}^{\text{-1}}}.\]

    B) \[\frac{4}{3}M{{l}^{2}}\]

    C) \[\frac{2}{3}M{{l}^{2}}\]

    D) \[\frac{13}{3}M{{l}^{2}}\]

    Correct Answer: B

    Solution :

    [b] Optical isomerism is exhibited by only those complexes in which elements of symmetry are absent. Octahedral complexes of the types \[8\times {{10}^{-11}}\]and \[5\times {{10}^{7}}\]have absence of elements of symmetry, thus exhibit optical isomerism. Here, \[aa\] represents bidentate ligand, x or y    represents monodentate ligand and M represents central metal ion. Hence, \[{{\text{v}}_{\text{0}}}\]due to presence of symmetry elements does not exhibit optical isomerism.


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