Common Polyatomic Anions

Common Polyatomic Ions

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NH₄⁺       Ammonium Hg₂²⁺      Mercury(I)

Anions:

NO₂^-         Nitrite CO₃^2-         Carbonate

NO₃^-         Nitrate HCO₃^-         Bicarbonate

SO₃^2-        Sulfite PO₄^3-           Phosphate

SO₄^2-        Sulfate HPO₄^2-       Hydrogen phosphate

HSO₄^-       Hydrogen sulfate or Bisulfate H₂PO₄^-       Dihydrogen phosphate

ClO^-           Hypochlorite BrO^-             Hypobromite IO^-           Hypoiodite

ClO₂^-         Chlorite BrO₂^-           Bromite IO₂^-         Iodite

ClO₃^-         Chlorate BrO₃^-           Bromate IO₃^-         Iodate

ClO₄^-         Perchlorate BrO₄^-           Perbromate IO₄^-         Periodate

OH^-            Hydroxide C₂H₃O₂^-      Acetate MnO₄^-         Permanganate

CN^-           Cyanide C₂O₄^2-         Oxalate CrO₄^2-        Chromate

NCS^-         Thiocyanate N₃^-                Azide Cr₂O₇^2-      Dichromate

O₂^2-          Peroxide O₂^-               Superoxide

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Created 08/12/02
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NH₄⁺ Ammonium	Hg₂²⁺ Mercury(I)

Anions:
NO₂^- Nitrite	CO₃^2- Carbonate
NO₃^- Nitrate	HCO₃^- Bicarbonate
SO₃^2- Sulfite	PO₄^3- Phosphate
SO₄^2- Sulfate	HPO₄^2- Hydrogen phosphate
HSO₄^- Hydrogen sulfate or Bisulfate	H₂PO₄^- Dihydrogen phosphate

ClO^- Hypochlorite	BrO^- Hypobromite	IO^- Hypoiodite
ClO₂^- Chlorite	BrO₂^- Bromite	IO₂^- Iodite
ClO₃^- Chlorate	BrO₃^- Bromate	IO₃^- Iodate
ClO₄^- Perchlorate	BrO₄^- Perbromate	IO₄^- Periodate

OH^- Hydroxide	C₂H₃O₂^- Acetate	MnO₄^- Permanganate
CN^- Cyanide	C₂O₄^2- Oxalate	CrO₄^2- Chromate
NCS^- Thiocyanate	N₃^- Azide	Cr₂O₇^2- Dichromate
O₂^2- Peroxide	O₂^- Superoxide