AP Chemistry - Common Polyatomic Ions
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-1 charge (14), -2 charge (8), -3 charge (2), +1 charge (1)
Last updated 1:09 PM on 8/1/26
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25 Terms
1
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Dihydrogen phosphate
H₂PO₄⁻
2
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Acetate
C₂H₃O₂⁻
3
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Hydrogen sulfite
HSO₃⁻
4
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Hydrogen sulfate
HSO₄⁻
5
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Hydrogen carbonate
HCO₃⁻
6
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Nitrite
NO₂⁻
7
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Nitrate
NO₃⁻
8
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Cyanide
CN⁻
9
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Hydroxide
OH⁻
10
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Permanganate
MnO₄⁻
11
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Hypochlorite
ClO⁻
12
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Chlorite
ClO₂⁻
13
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Chlorate
ClO₃⁻
14
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Perchlorate
ClO₄⁻
15
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Hydrogen phosphate
HPO₄²⁻
16
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Oxalate
C₂O₄²⁻
17
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Sulfite
SO₃²⁻
18
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Sulfate
SO₄²⁻
19
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Carbonate
CO₃²⁻
20
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Chromate
CrO₄²⁻
21
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Dichromate
Cr₂O₇²⁻
22
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Silicate
SiO₃²
23
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Phosphite
PO₃³⁻
24
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Phosphate
PO₄³⁻
25
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Ammonium
NH₄⁺