Uttarakhand PMT Uttarakhand PMT Solved Paper-2005

  • question_answer
    If\[n=3,\text{ }l=0\]and\[m=0,\]then atomic number is:

    A)  12, 13           

    B) 13, 14

    C)  10, 11           

    D)  11, 12

    Correct Answer: D

    Solution :

     If \[n=3,\text{ }l=0,\,w=0\]then the electronic configuration may be as follows: \[1{{s}^{2}},2{{s}^{2}}\text{ }2{{p}^{6}},3{{s}^{1}}\text{ }or\text{ 1}{{s}^{2}},\text{ }2{{s}^{2}}\text{ }2{{p}^{6}},3{{s}^{2}}\] Hence, the probable atomic numbers are 11,12.


You need to login to perform this action.
You will be redirected in 3 sec spinner