Common Polyatomic Ions

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Last updated 7:16 PM on 8/9/26
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21 Terms

1
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NH4

ammonium (1+)

2
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C2H3O2 or CH3COO

acetate (1-)

3
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CO3

carbonate (2-)

4
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HCO3

hydrogen carbonate or bicarbonate (1-)

5
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ClO

hypochlorite (1-)

6
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ClO2

chlorite (1-)

7
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ClO3

chlorate (1-)

8
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ClO4

perchlorate (1-)

9
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CrO4

chromate (2-)

10
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Cr2O7

dichromate (2-)

11
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CN

cyanide (1-)

12
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OH

hydroxide (1-)

13
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NO2

nitrite (1-)

14
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NO3

nitrate (1-)

15
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PO4

phosphate (3-)

16
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HPO4

hydrogen phosphate (2-)

17
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H2PO4

dihydrogen phosphate (1-)

18
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SO3

sulfite (2-)

19
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SO4

sulfate (2-)

20
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HSO4

hydrogen sulfate or bisulfate (1-)

21
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O2

peroxide (2-)