J & K CET Engineering J and K - CET Engineering Solved Paper-2007

  • question_answer
    The number of electrons accommodated in an orbit with principal quantum number 2, is

    A)  2           

    B)  6

    C)  10          

    D)  8

    Correct Answer: D

    Solution :

     The number of electrons \[=2{{n}^{2}}\] where, \[n=\]principal quantum number. For, \[n=2\] Number of electrons \[=2{{(2)}^{2}}=8\]


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