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Atomic Structure

Compound Anions.

Below are common compounds which form anions.
NO₃^-,   CO₃^2-,   SO₄^2-,   PO₄^3-.
They are called
nitrate, carbonate, sulfate and phosphate.

The anions should be treated as a single species carrying a charge.
Examples of ionic compounds with these ions are

LiNO₃, Mg(NO₃)₂,     lithium nitrate, magnesium nitrate,
Na₂CO₃, CaCO₃,     sodium carbonate, calcium carbonate,
K₂SO₄, MgSO₄,      potassium sulfate, magnesium sulfate,
 K₃PO₄, Ca₃(PO₄)₂,     potassium phosphate, calcium phosphate.

The other common compound anion is hydroxide, (OH)^-.
See acids and alkalis.

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