Polyatomic and Common Ions Reference

Vocabulary flashcards covering common monatomic and polyatomic ions, including their formulas and charges.

Cesium ion

Cs⁺

Lithium ion

Li⁺

Potassium ion

K⁺

Rubidium ion

Rb⁺

Sodium ion

Na⁺

Barium ion

Ba²⁺

Calcium ion

Ca²⁺

Magnesium ion

Mg²⁺

Strontium ion

Sr²⁺

Silver ion

Ag⁺

Cadmium ion

Cd²⁺

Zinc ion

Zn²⁺

Aluminum ion

Al³⁺

Bismuth(III) ion

Bi³⁺

Gallium ion

Ga³⁺

Ammonium ion

NH₄⁺

Hydronium ion

H₃O⁺

Mercury(I) ion (dimercury)

Hg₂²⁺

Mercury(II) ion

Hg²⁺

Molybdate ion

MoO₄²⁻

Chromate ion

CrO₄²⁻

Dichromate ion

Cr₂O₇²⁻

Permanganate ion

MnO₄⁻

Acetate ion

C₂H₃O₂⁻ (CH₃COO⁻)

Cyanide ion

CN⁻

Hydrogen carbonate ion (bicarbonate)

HCO₃⁻

Carbonate ion

CO₃²⁻

Oxalate ion

C₂O₄²⁻

Hypochlorite ion

ClO⁻

Chlorite ion

ClO₂⁻

Chlorate ion

ClO₃⁻

Perchlorate ion

ClO₄⁻

Bromate ion

BrO₃⁻

Iodate ion

IO₃⁻

Azide ion

N₃⁻

Nitrite ion

NO₂⁻

Nitrate ion

NO₃⁻

Peroxide ion

O₂²⁻

Hydroxide ion

OH⁻

Phosphate ion

PO₄³⁻

Hydrogen phosphate ion

HPO₄²⁻

Dihydrogen phosphate ion

H₂PO₄⁻

Sulfite ion

SO₃²⁻

Sulfate ion

SO₄²⁻

Hydrogen sulfite ion (bisulfite)

HSO₃⁻

Hydrogen sulfate ion (bisulfate)

HSO₄⁻

Thiosulfate ion

S₂O₃²⁻

Thiocyanate ion

SCN⁻

Bromide ion

Br⁻

Chloride ion

Cl⁻

Fluoride ion

F⁻

Iodide ion

I⁻

Oxide ion

O²⁻

Sulfide ion

S²⁻

Selenide ion

Se²⁻

Telluride ion

Te²⁻

Nitride ion

N³⁻

Phosphide ion

P³⁻

Arsenide ion

As³⁻

Carbide ion

C⁴⁻