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JEE Main & Advanced AIEEE Solved Paper-2005

  • question_answer
    In a multi-electron atom, which of the following orbitals described by the three quantum numbers 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)\[n=2,l=1,\text{ }m=1\]           (D)\[n=3,l=2,m=1\] (E)\[n=3,l=2,m=0\]     AIEEE  Solved  Paper-2005

    A) (D) and (E)       

    B)        (C) and (D)         

    C)        (B) and (C)       

    D)        (A) and (B)

    Correct Answer: A

    Solution :

    (A) 1s                    (B) 2s                     (C) 2p (D) 3d                    (E) 3d In the absence of any field. 3d in (D) and (E) will be of equal energy.


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