Chemistry: Polyatomic anions and cations.

Silver (cations)

Ag^+

Zinc (cations)

Zn^2+

Mercury(I) (cations)

Hg2^2+

Ammonium (cations)

NH4^+

Nitrite

NO2^-

Nitrate

NO3^-

Sulfite

SO3^2-

Sulfate

SO4^2-

Hydrogen sulfate (bisulfate)

HSO4^-

Hydroxide

OH^-

Cyanide

CN^-

Phosphate

PO4^3-

Hydrogen phosphate

HPO4^2-

Dihydrogen phosphate

H2PO4^-

Thiocyanate

NCS^-

Carbonate

CO3^2-

Hydrogen carbonate (bicarbonate)

HCO3^-

Hypochlorite

ClO^-

Chlorite

ClO2^-

Chlorate

ClO3^-

Perchlorate

ClO4^-

Hypobromite

BrO^-

Bromite

BrO2^-

Bromate

BrO3^-

Perbromate

BrO4^-

Hypoiodite

IO^-

iodite

IO2^-

iodate

IO3^-

Periodate

IO4^-

Acetate

C2H3O2^-

Permanganate

MnO4^-

Dichromate

Cr2O7^2-

Chromate

CrO4^2-

Peroxide

O2^2-

Oxalate

C2O4^2-

Amide

NH2^-

Borate

BO3^3-

Thiosulfate

S2O3^2-