common polyatomic ion list

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Chemistry

Molecular & Ionic Compounds

Last updated 9:03 PM on 12/13/25
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20 Terms

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Ammonium

NH₄¹⁺

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Acetate

C₂H₃O₂¹⁻

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Bicarbonate (hydrogen carbonate)

HCO₃¹⁻

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Cyanide

CN¹⁻

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Perchlorate

ClO₄¹⁻

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Chlorate

ClO₃¹⁻

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Chlorite

ClO₂¹⁻

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Hypochlorite

ClO¹⁻

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Hydroxide

OH¹⁻

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Nitrate

NO₂¹⁻

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Nitrite

NO₃¹⁻

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Permanganate

MnO₄¹⁻

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Carbonate

CO₃²⁻

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Chromate

CrO₄²⁻

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Dichromate

Cr₂O₇²⁻

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Oxalate

C₂O₄²⁻

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Sulfate

SO₄²⁻

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Sulfite

SO₃²⁻

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Phosphate

PO₄³⁻

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Phosphite

PO₃³⁻