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NEET Chemistry Structure of Atom / परमाणु संरचना NEET PYQ-Structure of Atom

  • question_answer
    Gadolinium belongs to \[4f\] series. Ifs atomic number is 64. Which of the following is the correct   electronic   configuration   of gadolinium?                                                                                                       [NEET 2015 (Re)]

    A)  \[[Xe]4{{f}^{8}}6{{d}^{2}}\]           

    B)       \[[Xe]4{{f}^{9}}\,5{{s}^{1}}\]

    C)  \[[Xe]4{{f}^{7}}\,5{{d}^{1}}\,6{{s}^{2}}\] 

    D)       \[[Xe]\,4{{f}^{6}}5{{d}^{2}}6{{s}^{2}}\]

    Correct Answer: C

    Solution :

    \[_{64}Gd=[Xe],4{{f}^{7}},5{{d}^{1}},6{{s}^{2}}\]


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