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

  • question_answer
    General electronic configuration of lanthanides are:                                                [AIPMT 2002]

    A)  \[(n-2){{f}^{1-14}}(n-1){{s}^{2}}{{p}^{6}}{{d}^{0-1}}n{{s}^{2}}\]

    B)       \[(n-2){{f}^{10-14}}(n-1){{d}^{0-1}}n{{s}^{2}}\]

    C)  \[(n-2){{f}^{0-14}}(n-1){{d}^{10}}n{{s}^{2}}\]       

    D)       \[(n-2){{d}^{0-1}}(n-1){{f}^{1-14}}n{{s}^{2}}\]

    Correct Answer: A

    Solution :

    In lanthanides (At. no. of elements 58 to 71) the electronic configuration of three outermost shell in
    \[(n-2){{f}^{1-14}},\,(n-1){{s}^{2}}{{p}^{6}}{{d}^{0\,to\,1}},\,n{{s}^{2}}\]


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