JEE Main & Advanced Chemistry Structure of Atom Question Bank Quantum number, Electronic configuration and Shape of orbitals

  • 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 [AIEEE 2005] (1)          \[n=1,\,l=0,\,m=0\]                         (2)          \[n=2,\,l=0,\,m=0\] (3)          \[n=2,\,l=1,\,m=1\]                         (4)          \[n=3,\,l=2,\,m=0\] (5)          \[n=3,\,l=2,\,m=0\]

    A)                 (1) and (2)          

    B)                 (2) and (3)

    C)                 (3) and (4)          

    D)                 (4) and (5)

    Correct Answer: D

    Solution :

                    (4) and (5) belong to \[d\]-orbital which are of same energy.

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