Polyatomic Ions - AP Chem 8.14
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List of polyatomic ions, their chemical formulas and their charges
Last updated 3:43 PM on 8/25/25
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26 Terms
1
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Mercury(I)
Hg2 2+
2
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Ammonium
NH4+
3
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Nitrite
NO2-
4
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nitrate
NO3-
5
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sulfite
SO3 2-
6
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sulfate
SO4 2-
7
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bisulfate
HSO4-
8
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Hydroxide
OH-
9
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cyanide
CN-
10
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Phosphate
PO4 3-
11
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hydrogen phosphate
HPO4 2-
12
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dihygrogen phosphate
H2PO4-
13
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Thiocyanate
SCN-
14
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Carbonate
CO3 2-
15
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bicarbonate
HCO3-
16
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Hypochlorite
ClO-
17
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chlorite
ClO2-
18
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Chlorate
ClO3-
19
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perchlorate
ClO4-
20
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acetate
C2H3O2-
21
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Permanganate
MnO4-
22
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Dichromate
Cr2O7 2-
23
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Chromate
CrO4 2-
24
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Peroxide
O2 2-
25
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oxalate
Cr2O4 2-
26
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Thiosulfate
S2O3 2-
Note 
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