JCECE Engineering JCECE Engineering Solved Paper-2011

  • question_answer
    How many electrons in \[19\,\,K\] have\[n=3;\,\,l=0?\]

    A) \[1\]                                     

    B) \[2\]

    C) \[4\]                                     

    D) \[3\]

    Correct Answer: B

    Solution :

    \[n=3\] and \[l=0\] means 3s-orbitals, and \[s-\]orbital occupy 2 electrons.


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