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What is true about valence electrons?

They are those electrons that are closest to the nucleus

They are those electrons that are neutrally charged

They are those electrons that are found in the nucleus

They are those electrons that are furthest from the nucleus

I don´t know what it means, please help.

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  1. it is
    They are those electrons that are furthest from the nucleus

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  2. correct

    they are the ones that participate in chemical bonding

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