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    •  Science >> Science Discoveries >  >> Chemistry
    Selenium Valence Electrons: Understanding Electron Configuration & Reactivity
    Selenium has 6 valence electrons.

    Here's why:

    * Electronic Configuration: Selenium's electronic configuration is [Ar] 3d¹⁰ 4s² 4p⁴.

    * Valence Shell: The outermost shell (n=4) contains the valence electrons.

    * Valence Electrons: The 4s² and 4p⁴ subshells contain a total of 6 electrons (2 + 4 = 6).

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