Common Ions List

Aluminum

Al³⁺

Cadmium

Cd²⁺

Silver

Ag¹⁺

Zinc

Zn²⁺

Chromium (II)

Cr²⁺

Chromium (III)

Cr³⁺

Cobalt (II)

Co²⁺

Cobalt (III)

Co³⁺

Copper (I)

Cu¹⁺

Copper (II)

Cu²⁺

Iron (II)

Fe²⁺

Iron (III)

Fe³⁺

Lead (II)

Pb²⁺

Lead (IV)

Pb⁴⁺

Manganese (II)

Mn²⁺

Manganese (IV)

Mn⁴⁺

Mercury (II)

Hg²⁺

Nickel (II)

Ni²⁺

Nickel (III)

Ni³⁺

Tin (II)

Sn²⁺

Tin (IV)

Sn⁴⁺

Ammonium

NH₄¹⁺

Hydronium

H₃O¹⁺

Mercury (I)

Hg₂²⁺

Nitride

N³⁻

Oxide

O²⁻

Phosphide

P³⁻

Sulfide

S²⁻

Acetate

C₂H₃O₂¹⁻ or CH₃COO¹⁻

Amide

NH₂¹⁻

Bicarbonate (hydrogen carbonate)

HCO₃¹⁻

Bisulfate (hydrogen sulfate)

HSO₄¹⁻

Bisulfite (hydrogen sulfite)

HSO₃¹⁻

Bromate

BrO₃¹⁻

Bromite

BrO₂¹⁻

Formate

CHO₂¹⁻ or CHOO¹⁻

Chlorite

ClO₂¹⁻

Chlorate

ClO₃¹⁻

Perchlorate

ClO₄¹⁻

Cyanide

CN¹⁻

Dihydrogen phosphate

H₂PO₄¹⁻

Hydroxide

OH¹⁻

Iodate

IO₃¹⁻

Iodite

IO₂¹⁻

Nitrate

NO₃¹⁻

Nitrite

NO₂¹⁻

Permanganate

MnO₄¹⁻

Thiocynate

SCN¹⁻

Carbonate

CO₃²⁻

Chromate

CrO₄²⁻

Dichromate

Cr₂O₇²⁻

Manganate

MnO₄²⁻

Peroxide

O₂²⁻

Sulfate

SO₄²⁻

Sulfite

SO₃²⁻

Tartrate

C₄H₄O₆²⁻

Thiosulfate

S₂O₃²⁻

Aluminate

AlO₃³⁻

Arsenate

AsO₄³⁻

Borate

BO₃³⁻

Citrate

C₆H₅O₇³⁻

Phosphate

PO₄³⁻

Phosphite

PO₃³⁻