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JCECE Medical JCECE Medical Solved Paper-2014

  • question_answer
    The electrons, identified by quantum numbers \[n\]and\[l,\] (i)\[~n=4,l=1\] (ii)\[n=4,l=0\](iii) \[n=3,l=2\](iv) \[n=3,l=1\] can be placed in order of increasing energy, from the lowest to highest, as

    A) \[(iv)<(ii)<(iii)<(i)\]

    B)  \[(ii)<(iv)<(i)<(iii)\]

    C)  \[(i)<(iii)<(ii)<(ii)\]

    D)  \[(iii)<(i)<(iv)<(ii)\]

    Correct Answer: A

    Solution :

     (i) \[4p\] (ii) \[4s\] (iii) \[3d\] \[3p.\] According to Aufbau rule, order of increasing energy is\[~3p<45<3d<4p.\]


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