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NEET Sample Paper NEET Sample Test Paper-48

  • question_answer
    Which of the following element outermost orbit's last electron has magnetic quantum number m=0?

    A) Na                   

    B) O      

    C) Cl                    

    D) N

    Correct Answer: A

    Solution :

    Na \[_{11}Na=I{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{1}}\] \[\operatorname{i}.e for last electron, l= 0\] \[\therefore m=0\]


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