2. Solved Papers
  3. CET Karnataka Medical

CET Karnataka Medical CET - Karnataka Medical Solved Paper-2003

  • question_answer
    If elements with principal quantum number n > 4 were not allowed in nature, the number of possible elements would have been:

    A)  32

    B)  60

    C)  64

    D)  4

    Correct Answer: B

    Solution :

    For \[n>4\] the possible numbers of elements \[=2[n_{1}^{2}+n_{2}^{2}+n_{3}^{2}+n_{4}^{2}]\] \[=2[{{(1)}^{2}}+{{(2)}^{2}}+{{(3)}^{2}}+{{(4)}^{2}}]\] \[=2[1+4+9+16]=60\]


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