Polyatomic Ions — Honors Chemistry (22)

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All 22 polyatomic ions for Ms. Adkins' week-1 quiz. Formula → name.

Last updated 6:43 PM on 7/16/26
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22 Terms

1
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NH₄⁺

Ammonium

2
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NO₂⁻

Nitrite

3
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NO₃⁻

Nitrate

4
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SO₃²⁻

Sulfite

5
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SO₄²⁻

Sulfate

6
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HSO₄⁻

Hydrogen sulfate (Bisulfate)

7
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OH⁻

Hydroxide

8
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CN⁻

Cyanide

9
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PO₄³⁻

Phosphate

10
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HPO₄²⁻

Hydrogen phosphate

11
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H₂PO₄⁻

Dihydrogen phosphate

12
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CO₃²⁻

Carbonate

13
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HCO₃⁻

Hydrogen carbonate (Bicarbonate)

14
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ClO⁻

Hypochlorite

15
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ClO₂⁻

Chlorite

16
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ClO₃⁻

Chlorate

17
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ClO₄⁻

Perchlorate

18
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C₂H₃O₂⁻

Acetate

19
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MnO₄⁻

Permanganate

20
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Cr₂O₇²⁻

Dichromate

21
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CrO₄²⁻

Chromate

22
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O₂²⁻

Peroxide