Chemistry Polyatomic Ions

These flashcards cover various polyatomic ions, providing both their common names and chemical formulas.

Ammonium ion

NH₄⁺

Carbonate ion

CO₃²⁻

Mercury(I) ion

Hg₂²⁺

Hydrogen carbonate ion (bicarbonate ion)

HCO₃⁻

Hydronium ion

H₃O⁺

Sulfite ion

SO₃²⁻

Hydroxide ion

OH⁻

Hydrogen sulfite ion (bisulfite ion)

HSO₃⁻

Cyanide ion

CN⁻

Sulfate ion

SO₄²⁻

Nitrite ion

NO₂⁻

Hydrogen sulfate ion (bisulfate ion)

HSO₄⁻

Nitrate ion

NO₃⁻

Thiocyanate ion

SCN⁻

Hypochlorite ion

ClO⁻ or OCl⁻

Thiosulfate ion

S₂O₃²⁻

Chlorite ion

ClO₂⁻

Chromate ion

CrO₄²⁻

Chlorate ion

ClO₃⁻

Dichromate ion

Cr₂O₇²⁻

Perchlorate ion

ClO₄⁻

Phosphate ion

PO₄³⁻

Permanganate ion

MnO₄⁻

Monohydrogen phosphate ion

HPO₄²⁻

Acetate ion

C₂H₃O₂⁻

Dihydrogen phosphate ion

H₂PO₄⁻

Oxalate ion

C₂O₄²⁻