CHEM Common Polyatomic Ions

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Last updated 12:19 AM on 9/20/26
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46 Terms

1
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acetate

C2H3O2^-1

2
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carbonate

CO3^-2

3
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hydrogen carbonate / bicarbonate

HCO3^-1

4
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hydroxide

OH^-1

5
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nitrite

NO2^-1

6
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nitrate

NO3^-1

7
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chromate

CrO4^-2

8
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dichromate

Cr2O7^-2

9
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phosphate

PO4^-3

10
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hydrogen phosphate

HPO4^-2

11
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dihydrogen phosphate

H2PO4^-1

12
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ammonium

NH4^+1

13
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hypochlorite

ClO^-1

14
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chlorite

ClO2^-1

15
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chlorate

ClO3^-1

16
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perchlorate

ClO4^-1

17
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permanganate

MnO4^-1

18
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sulfite

SO3^-2

19
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hydrogen sulfite / bisulfite

HSO3^-1

20
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sulfate

SO4^-2

21
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hydrogen sulfate / bisulfate

HSO4^-1

22
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cyanide

CN^-1

23
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peroxide

O2^-2

24
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C2H3O2^-1

acetate

25
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CO3^-2

carbonate

26
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HCO3^-1

hydrogen carbonate / bicarbonate

27
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OH^-1

hydroxide

28
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NO2^-1

nitrite

29
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NO3^-1

nitrate

30
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CrO4^-2

chromate

31
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Cr2O7^-2

dichromate

32
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PO4^-3

phosphate

33
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HPO4^-2

hydrogen phosphate

34
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H2PO4^-1

dihydrogen phosphate

35
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NH4^+1

ammonium

36
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ClO^-1

hypochlorite

37
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ClO2^-1

chlorite

38
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ClO3^-1

chlorate

39
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ClO4^-1

perchlorate

40
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MnO4^-1

permanganate

41
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SO3^-2

sulfite

42
New cards

HSO3^-1

hydrogen sulfite / bisulfite

43
New cards

SO4^-2

sulfate

44
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HSO4^-1

hydrogen sulfate / bisulfate

45
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CN^-1

cyanide

46
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O2^-2

peroxide