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J & K CET Engineering J and K - CET Engineering Solved Paper-2011

  • question_answer
    The lanthanide element that has the electronic configuration, \[[Xe]4{{f}^{7}}5{{d}^{1}}6{{s}^{2}}\]is

    A)  lutetium        

    B)  terbium

    C)  ytterbium       

    D)  gadolinium

    Correct Answer: D

    Solution :

     The atomic number of gadolinium (Gd) is 64 and its electronic configuration is as \[Gd(64):[Xe]4{{f}^{7}}\,5{{d}^{1}}6{{s}^{2}}\]


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