Common Polyatomic Ions

A set of vocabulary flashcards covering the names and chemical formulas of common polyatomic ions as presented in Table 2.5.

Mercury(I)

$$Hg_2^{2+}$$

Ammonium

NH₄⁺

Carbonate

CO32-

Thiocyanate

NCS^- or SCN^-

Nitrite

NO₂^-

Hydrogen carbonate

HCO₃^-

Nitrate

NO₃^-

Hypochlorite

ClO^- or OCl^-

Sulfite

SO₃^2-

Chlorite

ClO2-

Sulfate

SO₄^2-

Chlorate

ClO₃^-

Hydrogen sulfate

HSO₄^-

Perchlorate

ClO₄^-

Hydroxide

OH^-

Acetate

C₂H₃O₂^-

Cyanide

CN^-

Permanganate

MnO₄^-

Phosphate

PO₄^3-

Hydrogen phosphate

HPO₄^2-

Dichromate

Cr₂O₇^2-

Chromate

CrO₄^2-

Dihydrogen phosphate

H₂PO₄^-

Peroxide

O₂^2-

Oxalate

C₂O₄^2-

Thiosulfate

S₂O₃^2-