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JEE Main & Advanced Chemistry Structure of Atom / परमाणु संरचना Question Bank Self Evaluation Test - Structure of Atom

  • question_answer
    In a multi-electron atom, which of the following orbitals described by the three quantum members will have the same energy in the absence of magnetic and electric fields?
    [A] \[n=1,l=0,m=0\]
    [B] \[n=2,l=0,m=0\]
     [C] \[n=2,l=1,m=1\]
    [D] \[n=3,l=2,m=1\]
    [E] \[n=3,l=2,m=0\]
     

    A) [D] and [E]     

    B) [C] and [D]

    C) [B] and [C]    

    D) [A] and [B]

    Correct Answer: A

    Solution :

    [a] The energy of an orbital is given by\[(n+l)\]. In (D) and (E), \[(n+l)\]value is \[\left( 3+2 \right)=5,\] hence they will have same energy, since here n values are also same.     


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