Chem 115 - Polyatomic Ions
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Last updated 7:06 PM on 9/1/25
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23 Terms
1
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Acetate
C₂H₃O₂⁻
2
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Carbonate
CO₃²⁻
3
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Hydrogen carbonate (or bicarbonate)
HCO₃⁻
4
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Hydroxide
OH⁻
5
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Nitrite
NO₂⁻
6
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Nitrate
NO₃⁻
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Chromate
CrO₄²⁻
8
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Dichromate
Cr₂O₇²⁻
9
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Sulfite
SO₃²⁻
10
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Hydrogen sulfite (or bisulfite)
HSO₃⁻
11
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Sulfate
SO₄²⁻
12
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Hydrogen sulfate (or bisulfate)
HSO₄⁻
13
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Phosphate
PO₄³⁻
14
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Hydrogen phosphate
HPO₄²⁻
15
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Dihydrogen phosphate
H₂PO₄⁻
16
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Cyanide
CN⁻
17
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Peroxide
O₂²⁻
18
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Ammonium
NH₄⁺
19
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Hypochlorite
ClO⁻
20
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Chlorite
ClO₂⁻
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Chlorate
ClO₃⁻
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Perchlorate
ClO₄⁻
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Permanganate
MnO₄⁻
Note 
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