Polyatomic Ions - AP Chem

Ammonium

NH₄⁺

Hydronium

H₃O⁺

Mercury (I)

Hg₂⁺²

Mercury (II)

Hg⁺²

Acetate

C₂H₃O₂⁻

Bromate

BrO₃⁻

Bromite

BrO₂⁻

Chlorate

ClO₃⁻

Chlorite

ClO₂⁻

Hypochlorite

ClO⁻

Perchlorate

ClO₄⁻

Cyanide

CN⁻

Dihydrogen Phosphate

H₂PO₄⁻

Dihydrogen Phosphite

H₂PO₃⁻

Hydrogen Carbonate (bicarbonate)

HCO₃⁻

Hydrogen Sulfate

HSO₄⁻

Hydrogen Sulfite

HSO₃⁻

Hydrogen Sulfide

HS⁻

Hydroxide

OH⁻

Iodate

IO₃⁻

Iodite

IO₂⁻

Nitrate

NO₃⁻

Nitrite

NO₂⁻

Permanganate

MnO₄⁻

Thiocyanate

SCN⁻

Carbonate

CO₃⁻²

Chromate

CrO₄⁻²

Dichromate

Cr₂O₇⁻²

Monohydrogen Phosphate

HPO₄⁻²

Monohydrogen Phosphite

HPO₃⁻²

Oxalate

C₂O₄⁻²

Peroxide

O₂⁻²

Silicate

SiO₃⁻²

Sulfate

SO₄⁻²

Sulfite

SO₃⁻²

Tartrate

C₄H₄O₆⁻²

Thiosulfate

S₂O₃⁻²

Arsenate

AsO₄⁻³

Arsenite

AsO₃⁻³

Borate

BO₃⁻³

Phosphate

PO₄⁻³

Phosphite

PO₃⁻³