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13 August, 12:08

Compare the electron configurations of hydrogen, lithium, and sodium. Why do you think these elements are grouped in the same family?

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  1. 13 August, 12:21
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    they all have the same amount if valance electrons

    Explanation:

    hydrogen has an electron configuration of 1.

    lithium has 2-1

    sodium has 2-8-1

    their valance electrons on the outer shell all have 1 electron, which is why they are grouped in the same family
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