2021-2022 Polyatomic Ions To Memorize

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Anion Table - Revised 2009-2010
This list does not include anions you can get directly from the Periodic Table

Phosphate, PO₄^3-
Phosphite, PO₃^3-
Acetate, C₂H₃O₂^1-
Sulfite, SO₃^2-
Sulfate, SO₄^2-
Carbonate, CO ₃^2-
Nitrite, NO₂^1-
Nitrate, NO₃^1-
Hydroxide, OH^1-
Chlorite, ClO₂^1-
Chlorate, ClO₃^1-
Chromate, CrO₄^2-
Peroxide, O₂^2-
Cyanide, CN^1-
Permanganate, MnO₄^1-

PLUS ONE CATION POLYATOMIC IONS: Ammonium NH₄¹⁺