The Polyatomic Ions You Must Know

1-

 

2-

 

3-

C2H3O2-

Acetate

 

CO32-

Carbonate

 

PO43-

Phosphate

HCO3-

Bicarbonate ( Hydrogen carbonate)

 

CrO42-

Chromate

 

PO33-

Phosphite

ClO3-

Chlorate

 

Cr2O72-

Dichromate

 

 

ClO2-

Chlorite

 

HPO42-

Hydrogen phosphate

 

 

 

CN-

Cyanide

 

C2O42-

Oxalate

 

1+

H2PO4-

Dihydrogen phosphate

 

O22-

Peroxide

 

NH4+

Ammonium

HSO4-

Hydrogen sulfate

 

SiO32-

Silicate

 

 

HSO3-

Hydrogen sulfite

 

SO42-

Sulfate

 

 

OH-

Hydroxide

 

SO32-

Sulfite

 

 

ClO-

Hypochlorite

 

C4H4O62-

Tartrate

 

 

NO3-

Nitrate

 

 

 

 

 

NO2-

Nitrite

 

 

* Honors Only

 

 

ClO4-

Perchlorate

 

 

 

 

 

MnO4-

Permanganate

 

 

 

 

 


Metal Ions You Must Know

1+

 

2+

 

3+

 

4+

Cu+

Copper (I) cuprous

 

Cd2+

Cadmium

 

Co3+

Cobalt (III) cobaltic

 

Pb4+

Lead (IV) plumbic

Ag+

Silver

 

Co2+

Cobalt (II) cobaltous

 

Cr3+

Chromium (III) chromic

 

Sn4+

Tin (IV) stannic

 

 

 

Cr2+

Chromium (II) chromous

 

Fe3+

Iron (III) ferric

 

 

 

 

 

 

Cu 2+

Copper (II) cupric

 

Mn3+

Manganese (III) manganic

 

 

 

 

 

 

Fe2+

Iron (II) ferrous

 

 

 

 

 

 

 

 

Pb2+

Lead (II) plumbous

 

 

 

 

 

 

 

 

 

Mn2+

Manganese (II) manganous

 

 

* Honors Only

 

 

 

 

 

 

Hg22+

Mercury(I) mercurous

 

 

 

 

 

 

 

 

 

Hg2+

Mercury (II) mercuric

 

 

 

 

 

 

 

 

 

Ni2+

Nickel

 

 

 

 

 

 

 

 

 

Sn2+

Tin (II) stannous

 

 

 

 

 

 

 

 

 

Zn2+

Zinc