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They show how many bonds an atom can create, and whether it gains or loses electrons. (Atoms with 5-7 valence electrons tend to gain electrons, atoms with 1-3 valence electrons tend to lose electrons, atoms with 4 valence electrons can do either, and atoms with 8 valence electrons don't naturally bond)

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13y ago
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12y ago

the coordination number of an ion is the number of ions of opposite charge that surround the ion in a crystal

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11y ago

Absolutely. Just balance up the positive charges of the cations with the negative charges of the anions and away you go.

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Q: How do you use electron configurations to predict formulas of ionic compounds?
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