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Lewis diagrams | The periodic table and Lewis diagrams | High school chemistry | Khan Academy

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Lewis diagrams | The periodic table and Lewis diagrams | High school chemistry | Khan Academy
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Lewis diagrams for atoms and ions are models that show the number of valence electrons (outermost electrons) they have. Lewis diagrams of atoms show the element's symbol surrounded by dots representing valence electrons. For monatomic ions, Lewis diagrams also includes brackets and the ion's charge. The number of valence electrons in an ion's Lewis diagram reflects the ion's charge.

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Khan Academy
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04:18
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