Polyatomic Ions: Names and Formulas (AP)
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23 Terms
1
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Hydroxide ion
OH⁻
2
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Nitrite ion
NO₂⁻
3
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Nitrate ion
NO₃⁻
4
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Bicarbonate (hydrogen carbonate) ion
HCO₃⁻
5
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Carbonate ion
CO₃²⁻
6
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Acetate ion
CH₃COO⁻ or C₂H₃O₂⁻
7
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Sulfite ion
SO₃²⁻
8
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Sulfate ion
SO₄²⁻
9
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Phosphate ion
PO₄³⁻
10
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Ammonium ion
NH₄⁺
11
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Hypochlorite ion
ClO⁻
12
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Chlorite ion
ClO₂⁻
13
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Chlorate ion
ClO₃⁻
14
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Perchlorate ion
ClO₄⁻
15
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Hydrogen sulfate ion
HSO₄⁻
16
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Cyanide ion
CN⁻
17
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Permanganate ion
MnO₄⁻
18
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Thiocyanate ion
SCN⁻
19
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Phosphite ion
PO₃³⁻
20
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Oxalate ion
C₂O₄²⁻
21
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Chromate ion
CrO₄²⁻
22
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Dichromate ion
Cr₂O₇²⁻
23
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Peroxide ion
O₂²⁻
Note 
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