Polyatomic Ions with guide(1) - Tagged

Acetate

CH3COO- or C2H3O2-

Ammonium

NH4+

Carbonate

CO3 2-

Chlorate

ClO3-

Chlorite

ClO2-

Chromate

CrO4 2-

Cyanide

CN-

Dichromate

Cr2O7 2-

Dihydrogen phosphate

H2PO4-

Hydrogen carbonate

HCO3- (also known as bicarbonate)

Hydrogen phosphate

HPO4 2-

Hydrogen sulfate

HSO4- (also known as bisulfate)

Hydronium

H3O+

Hydroxide

OH-

Hypochlorite

ClO-

Mercury(I) ion

Hg2 2+.

Nitrate

NO3-

Nitrite

NO2-

Perchlorate

ClO4-

Permanganate

MnO4-

Peroxide

O2 2-

Phosphate

PO4 3-

Sulfate

SO4 2-

Sulfite

SO3 2-

Thiocyanate

SCN-

Cation

Positively charged ion.

Anion

Negatively charged ion.

Hydronium ion

A cation formed with a water molecule, H3O+.

Ammonium ion

A cation formed with one nitrogen and four hydrogen atoms, NH4+.

Ionic Charge

The electrical charge of an ion.

-ides

Suffix for anions that often denote a single negative charge.

-ates

Suffix for polyatomic ions containing oxygen.

-ites

Suffix that indicates one less oxygen than the corresponding 'ate' ion.

Hypo-

Prefix indicating one less oxygen than -ites.

Bi-

Prefix indicating the addition of a hydrogen atom.

Mercury(I) ion

A unique cation made of two mercury atoms with a +2 charge, Hg2 2+.

Nitrate

NO3-, a polyatomic ion with a -1 charge.

Sulfate

SO4 2-, a polyatomic ion with a -2 charge.

Phosphate

PO4 3-, a polyatomic ion with a -3 charge.

Thiocyanate

SCN-, a polyatomic ion.

Acid-base reaction

A chemical reaction that involves the transfer of protons (H+) between reactants.