JEE Main & Advanced Chemistry Structure of Atom Question Bank Quantum number, Electronic configuration and Shape of orbitals

  • question_answer The set of quantum numbers \[n=3,\,l=0,\,m=0,\,s=-1/2\]  belongs to the element

    A)                 \[Mg\] 

    B)                 \[Na\]

    C)                 \[Ne\]  

    D)                 \[F\]

    Correct Answer: A

    Solution :

               \[M{{g}_{12}}\] have \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}\] electronic configuration                                 \[n=3,\,\,l=0,\,\,m=0,\,\,s=-\frac{1}{2}\].

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