JEE Main & Advanced Chemistry Structure of Atom / परमाणु संरचना Question Bank Mock Test - Atomic Structure

  • question_answer
    The total spin and magnetic moment for the atom with atomic number 7 are:

    A) \[\pm 3,\,\sqrt{3}BM\]    

    B) \[\pm 1,\,\sqrt{8}BM\]

    C) \[\pm \frac{3}{2},\,\sqrt{15}BM\]           

    D) \[0,\sqrt{8}BM\]

    Correct Answer: C

    Solution :

    [c] Atomic number = 7             Structure is \[1{{s}^{2}},2{{s}^{2}},2{{p}^{3}}\]                  \[[1]\,\,\,[1]\,\,\,[1]\]             n=3             Total spin = \[\pm \frac{1}{2}n=\pm \frac{1}{2}\times 3=\pm \frac{3}{2}\]             Magnetic moment = \[\sqrt{n(n+2)}\]             \[=\sqrt{3(3+2)}=\sqrt{15}\]BM


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