NEET Chemistry NEET PYQ-Coordination Chemistry

  • question_answer
    Which of die following will exhibit maximum ionic conductivity?                              [AIPMT 2001]

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

    B) \[[Co\,{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]

    C) \[[Cu{{(N{{H}_{3}})}_{4}}3C{{l}_{2}}\]

    D) \[[Ni\,{{(CO)}_{4}}]\]

    Correct Answer: A

    Solution :

    [a] Compounds having larger number of ions after decomposition will show the maximum conductivity. \[{{K}_{4}}[Fe\,{{(CN)}_{6}}]\] gives maximum number of ions. So, it shows maximum conductivity.
                \[[Co{{(N{{H}_{3}})}_{6}}]\,C{{l}_{3}}\xrightarrow[{}]{{}}\underbrace{{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}+3C{{l}^{-}}}_{=\,Four\,ions}\]
                \[{{K}_{4}}[Fe{{(CN)}_{6}}]\xrightarrow[{}]{{}}\underbrace{4{{K}^{+}}+{{[Fe{{(CN)}_{6}}]}^{4-}}}_{=Five\,ions}\]
                \[[Cu{{(N{{H}_{3}})}_{4}}]C{{l}_{2}}\xrightarrow[{}]{{}}\underbrace{{{[Cu{{(N{{H}_{3}})}_{4}}]}^{2+}}+2C{{l}^{-}}}_{=Three\,ions}\]
                \[Ni{{(CO)}_{4}}\xrightarrow[{}]{{}}No\,ions\]


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