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RAJASTHAN ­ PET Rajasthan PET Solved Paper-2001

  • question_answer
    Which of the following has\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},\] \[3{{s}^{2}}3{{p}^{6}},3{{d}^{10}}4{{s}^{2}}\]electronic configuration?

    A)  Zn              

    B)  \[Cu\]

    C)  \[Co\]               

    D)  \[Ni\]

    Correct Answer: A

    Solution :

     Electronic configuration \[=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}},3{{p}^{6}},3{{d}^{10}},4{{s}^{2}}\] atomic number =30 Hence, this is the electronic configuration of Zn.


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