NEET Sample Paper NEET Sample Test Paper-24

  • question_answer
    \[[Cr{{({{H}_{2}}O)}_{6}}]C{{l}_{3}}\](at no. of Cr = 24) has a magnetic moment of 3.83 B.M. The correct distribution of 3d electrons in the chromium of the complex

    A) \[3d_{xy}^{1},3d_{yz}^{1},3_{xz}^{1}\]                  

    B) \[3_{xy}^{1},3d_{yz}^{1},3d_{{{z}^{2}}}^{1}\]

    C) \[(3d_{{{x}^{2}}-{{y}^{2}}}^{1}),3d_{{{z}^{2}}}^{1},3d_{xz}^{1}\]    

    D) \[3d_{xy}^{1},(3d_{{{x}^{2}}-{{y}^{2}}}^{1}),3d_{yz}^{1}\]

    Correct Answer: A

    Solution :

    \[C{{u}^{3+}}=1{{s}^{2}}2{{s}^{2}},3{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{3}}.\]The \[3d_{xy,}^{1}3d_{xz}^{1},3d_{yz}^{1}\] has lower energy.


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