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NEET Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank Self Evaluation Test - The d-and f-Block Elements

  • question_answer
    The blue complex formed on addition of cone. \[N{{H}_{4}}OH\] solution to a \[C{{u}^{2+}}\] salt solution has the structure?

    A) \[{{[Cu{{(N{{H}_{4}})}_{4}}]}^{2+}}\]        

    B) \[{{[Cu{{(N{{H}_{3}})}_{2}}]}^{2+}}\]

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

    D) \[{{[Cu{{(N{{H}_{4}})}_{2}}]}^{2+}}\]

    Correct Answer: C

    Solution :

    [c] \[C{{u}^{2+}}+4N{{H}_{4}}OH\to \] \[\underset{deep\text{ }blue\text{ }comp}{\mathop{{{\left[ Cu{{\left( N{{H}_{3}} \right)}_{4}} \right]}^{2+}}}}\,+4{{H}_{2}}O\]


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