Names and Charges of Polyatomic Ions

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Vocabulary flashcards mapping polyatomic ion names to their charges and chemical formulas based on Table B.8 from Bay High School Chemistry.

Last updated 8:42 PM on 9/20/26
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28 Terms

1
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Acetate

A polyatomic ion with a 1- charge and the formula C2H3O2−C_2H_3O_2^-

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Bicarbonate (Hydrogen carbonate)

A polyatomic ion with a 1- charge and the formula HCO3−HCO_3^-

3
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Bisulfate (Hydrogen sulfate)

A polyatomic ion with a 1- charge and the formula HSO4−HSO_4^-

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Bisulfite (Hydrogen sulfite)

A polyatomic ion with a 1- charge and the formula HSO3−HSO_3^-

5
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Chlorate

A polyatomic ion with a 1- charge and the formula ClO3−ClO_3^-

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Chlorite

A polyatomic ion with a 1- charge and the formula ClO2−ClO_2^-

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Cyanide

A polyatomic ion with a 1- charge and the formula CN−CN^-

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Dihydrogen phosphate

A polyatomic ion with a 1- charge and the formula H2PO4−H_2PO_4^-

9
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Ethanoate

A polyatomic ion with a 1- charge and the formula CH3COO−CH_3COO^-

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Hypochlorite

A polyatomic ion with a 1- charge and the formula ClO−ClO^-

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Hydroxide

A polyatomic ion with a 1- charge and the formula OH−OH^-

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Nitrate

A polyatomic ion with a 1- charge and the formula NO3−NO_3^-

13
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Nitrite

A polyatomic ion with a 1- charge and the formula NO2−NO_2^-

14
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Perchlorate

A polyatomic ion with a 1- charge and the formula ClO4−ClO_4^-

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Permanganate

A polyatomic ion with a 1- charge and the formula MnO4−MnO_4^-

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Thiocyanate

A polyatomic ion with a 1- charge and the formula SCN−SCN^-

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Carbonate

A polyatomic ion with a 2- charge and the formula CO32−CO_3^{2-}

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Chromate

A polyatomic ion with a 2- charge and the formula CrO42−CrO_4^{2-}

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Dichromate

A polyatomic ion with a 2- charge and the formula Cr2O72−Cr_2O_7^{2-}

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Oxalate

A polyatomic ion with a 2- charge and the formula C2O42−C_2O_4^{2-}

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Peroxide

A polyatomic ion with a 2- charge and the formula O22−O_2^{2-}

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Silicate

A polyatomic ion with a 2- charge and the formula SiO32−SiO_3^{2-}

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Sulfate

A polyatomic ion with a 2- charge and the formula SO42−SO_4^{2-}

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Sulfite

A polyatomic ion with a 2- charge and the formula SO32−SO_3^{2-}

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Thiosulfate

A polyatomic ion with a 2- charge and the formula S2O32−S_2O_3^{2-}

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Phosphate

A polyatomic ion with a 3- charge and the formula PO43−PO_4^{3-}

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Phosphite

A polyatomic ion with a 3- charge and the formula PO33−PO_3^{3-}

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Ammonium

A polyatomic ion with a 1+ charge and the formula NH4+NH_4^+