Common Polyatomic Ions

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Vocabulary flashcards defining common polyatomic ions and their chemical formulas.

Last updated 11:36 AM on 9/24/26
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13 Terms

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Carbonate ion

A polyatomic ion with the chemical formula CO32−CO_3^{2-}

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Chlorate ion

A polyatomic ion with the chemical formula ClO3−ClO_3^-

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Cyanide ion

A polyatomic ion with the chemical formula CN−CN^-

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Dichromate ion

A polyatomic ion with the chemical formula Cr2O72−Cr_2O_7^{2-}

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Hydrogen carbonate ion (or bicarbonate ion)

A polyatomic ion with the chemical formula HCO3−HCO_3^-

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Hydroxide ion

A polyatomic ion with the chemical formula OH−OH^-

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Nitrate ion

A polyatomic ion with the chemical formula NO3−NO_3^-

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Perchlorate ion

A polyatomic ion with the chemical formula ClO4−ClO_4^-

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Permanganate ion

A polyatomic ion with the chemical formula MnO4−MnO_4^-

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Phosphate ion

A polyatomic ion with the chemical formula PO43−PO_4^{3-}

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Sulfate ion

A polyatomic ion with the chemical formula SO42−SO_4^{2-}

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