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    NEET 2026 Preparation Tips for Chemistry, Biology and Physics

    Stability Of Orbitals: Half-Filled And Completely-Filled MCQ - Practice Questions with Answers

    Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

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    No. of electron in 3d subshell and 4s subshell in Cu respectively are

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    Stability of Completely filled and Half-filled Subshells

    Stability of completely filled and half-filled subshells 

    It is well known that symmetry leads to stability. The completely filled or half-filled subshells have the symmetrical distribution of electrons in them and are therefore more stable.

    For eg: the valence electronic configurations of Cr and Cu, therefore, are 3d54s1 and 3d104s1 respectively and not 3d44s2 and 3d94s2.

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    Stability of Completely filled and Half-filled Subshells

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