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JEE Main & Advanced Sample Paper JEE Main Sample Paper-25

  • question_answer
    Which set of quantum numbers is possible for the last electron of \[M{{g}^{+}}ion\]-

    A)  \[n=3,\,\ell =2,\,m=0,\,s=+1/2\]

    B)  \[n=2,\,\ell =3,\,m=0,\,s=+1/2\]

    C)  \[n=1,\,\ell =0,\,m=0,\,s=+1/2\]

    D)  \[n=3,\,\ell =0,\,m=0,\,s=+1/2\]

    Correct Answer: D

    Solution :

    Electronic configuration: \[1{{s}^{2}}2{{s}^{2}}2{{p}^{2}}\,3{{s}^{1}}\] For 3s orbital \[n=3,\,\,\ell =0,\,m=0,\,\,s=+1/2\]


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