2. Solved Papers
  3. JEE Main & Advanced

JEE Main & Advanced AIEEE Solved Paper-2004

  • question_answer
    Consider the ground state of\[Cr\]atom\[(Z=24)\]. The numbers of electrons with the azimuthal quantum numbers, \[l=1\] and 2 are, respectively

    A) 12 and 4              

    B)        12 and 5              

    C)        16 and 4              

    D)        16 and 5

    Correct Answer: B

    Solution :

    Electronic configuration of\[Cr(Z=24)\]is
    \[n\] \[l\]
    \[1{{s}^{2}}\] 1 0
    \[2{{s}^{2}}\] 2 0
    \[2{{p}^{6}}\] 2 1
    \[3{{s}^{2}}\] 3 0
    \[3{{p}^{6}}\] 3 1
    \[3{{d}^{5}}\] 3 2
    \[4{{s}^{1}}\] 4 0
    Thus, electrons with\[l=1,\]are 12 with\[l=2,\]are 5


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