Common Ions and Acids (Names, Formulas and Charges)

Ammonium

NH₄ ⁺¹

Hydronium

H₃O ⁺¹

Cadmium ion

Cd ⁺²

Gold ion

Au ⁺¹

Silver ion

Ag ⁺¹

Zinc ion

Zn ⁺²

Acetate

C₂H₃O₂ ⁻¹

Bicarbonate (Hydrogen carbonate)

HCO₃ ⁻¹

Bisulfate (Hydrogen sulfate)

HSO₄ ⁻¹

Bisulfide (Hydrogen sulfide)

HS ⁻¹

Bisulfite (Hydrogen sulfite)

HSO₃ ⁻¹

Bromate

BrO₃ ⁻¹

Bromite

BrO₂ ⁻¹

Chlorate

ClO₃ ⁻¹

Chlorite

ClO₂ ⁻¹

Cyanide

CN ⁻¹

Dihydrogen phosphate

H₂PO₄ ⁻¹

Hydroxide

OH ⁻¹

Hypobromite

BrO ⁻¹

Hypochlorite

ClO ⁻¹

Iodate

IO₃ ⁻¹

Nitrate

NO₃ ⁻¹

Nitrite

NO₂ ⁻¹

Perbromate

BrO₄ ⁻¹

Perchlorate

ClO₄ ⁻¹

Permanganate

MnO₄ ⁻¹

Thiocyanate

SCN ⁻¹

Carbonate

CO₃ ⁻²

Chromate

CrO₄ ⁻²

Dichromate

Cr₂O₇ ⁻²

Monohydrogen phosphate

HPO₄ ⁻²

Oxalate

C₂O₄ ⁻²

Peroxide

O₂ ⁻²

Sulfate

SO₄ ⁻²

Sulfite

SO₃ ⁻²

Thiosulfate

S₂O₃ ⁻²

Arsenate

AsO₄ ⁻³

Arsenite

AsO₃ ⁻³

Phosphate

PO₄ ⁻³

Phosphite

PO₃ ⁻³

Hydrochloric acid

HCl (strong acid)

Sulfuric acid

H₂SO₄ (strong acid)

Carbonic acid

H₂CO₃ (weak acid - breaks down into H₂O and CO₂ if it is a product of a reaction)

Acetic acid

HC₂H₃O₂ (weak acid)

Nitric acid

HNO₃ (strong acid)

Phosphoric acid

H₃PO₄ (weak acid)

Hydrobromic acid

HBr (strong acid)

Hydroiodic acid

HI (strong acid)

Hydrofluoric acid

HF (weak acid)

Chloric acid

HClO₃ (strong acid)

Perchloric acid

HClO₄ (strong acid)