Polyatomic Ions

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Last updated 3:22 AM on 9/13/26
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29 Terms

1
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CN⁻

cyanide

2
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MnO₄⁻

permanganate

3
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HCO₃⁻

hydrogen carbonate (bicarbonate)

4
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CrO₄²-

chromate

5
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ClO₄⁻

perchlorate

6
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SO₄²⁻

sulfate

7
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PO₄³⁻

phosphate

8
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Cr₂O₇²⁻

dichromate

9
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OH⁻

hydroxide

10
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HSO₄⁻

hydrogen sulfate (bisulfate)

11
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C₂H₃O₂⁻

acetate

12
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CO₃²⁻

carbonate

13
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NO₃⁻

nitrate

14
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NO₂⁻

nitrite

15
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SO₃²⁻

sulfite

16
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NH₄⁺

ammonium

17
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ClO₃⁻

chlorate

18
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ClO₂⁻

chlorite

19
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ClO⁻

hypochlorite

20
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O₂²⁻

peroxide

21
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HSO₃⁻

hydrogen sulfite (bisulfite)

22
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HPO₄²⁻

hydrogen phosphate

23
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H₂PO₄⁻

dihydrogen phosphate

24
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NH₃

ammonia (not polyatomic ion but good to know)

25
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PO₃³⁻

phosphite

26
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SO₃²⁻

sulfite

27
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ClO₂⁻

chlorite

28
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NH₄⁺

ammonium

29
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Hg₂²⁺

mercury (I)