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

  • question_answer The order of filling of electrons in the orbitals of an atom will be                                [CBSE PMT 1991]

    A)                 \[3d,\,4s,\,4p,\,4d,\,5s\]             

    B)                 \[4s,\,3d,\,4p,\,5s,\,4d\]

    C)                 \[5s,\,4p,\,3d,\,4d,\,5s\]             

    D)                 \[3d,\,4p,\,4s,\,4d,\,5s\]

    Correct Answer: B

    Solution :

                    As per Aufbau principle.


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