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

  • question_answer
    When \[3d\] orbital is complete, the new electron will enter the [EAMCET 1980; MP PMT 1995]

    A)                 \[4p\]-orbital    

    B)                 \[4f\]-orbital

    C)                 \[4s\]-orbital     

    D)                 \[4d\]-orbital

    Correct Answer: A

    Solution :

                    According to the Aufbau?s principle the new electron will enter in those orbital which have least energy. So here \[4p\]-orbital has least energy then the others.


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