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

  • question_answer Which of the following has the least energy

    A)                 \[2p\]   

    B)                 \[3p\]

    C)                 \[2s\]   

    D)                 \[4d\]

    Correct Answer: C

    Solution :

     \[2s\]orbital have minimum energy and generally electron filling increases order of energy according to the Aufbau?s principle. 

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