Polyatomic Ions and Transition Metal Ions

Acetate ion

C₂H₃O₂⁻

Ammonium ion

NH₄⁺

Carbonate ion

CO₃²⁻

Chlorate ion

ClO₃⁻

Chlorite ion

ClO₂⁻

Chromate ion

CrO₄²⁻

Cyanide ion

CN⁻

Dichromate ion

Cr₂O₇²⁻

Dihydrogen phosphate ion

H₂PO₄⁻

Hydrogen carbonate ion

HCO₃⁻ (Bicarbonate)

Hydrogen phosphate ion

HPO₄²⁻ (Biphosphate)

Hydrogen sulfate ion

HSO₄⁻ (Bisulfate)

Hydroxide ion

OH⁻

Hypochlorite ion

ClO⁻

Iodate ion

IO₃⁻

Nitrate ion

NO₃⁻

Nitrite ion

NO₂⁻

Oxalate ion

C₂O₄²⁻

Perchlorate ion

ClO₄⁻

Permanganate ion

MnO₄⁻

Peroxide ion

O₂²⁻

Phosphate ion

PO₄³⁻

Phosphite ion

PO₃³⁻

Sulfate ion

SO₄²⁻

Sulfite ion

SO₃²⁻

Thiocyanate ion

SCN⁻

Silver ion

Ag⁺

Zinc ion

Zn²⁺

Copper (I) ion

Cu⁺

Copper (II) ion

Cu²⁺

Iron (II) ion

Fe²⁺

Iron (III) ion

Fe³⁺

Lead (II) ion

Pb²⁺

Lead (IV) ion

Pb⁴⁺

Mercury (I) ion

Hg₂²⁺

Mercury (II) ion

Hg²⁺

Tin (II) ion

Sn²⁺

Tin (IV) ion

Sn⁴⁺