Polyatomic Ions

Acetate

CH3COO-

Hypochlorite

ClO-

Chlorite

ClO2-

Chlorate

ClO3-

Perchlorate

ClO4-

Nitrite

NO2-

Nitrate

NO3-

Cyanide

CN-

Bicarbonate

HCO3-

Permanganate

MnO4-

Hydrogen Sulfate

HSO4-

Hydroxide

OH-

Dihydrogen Phosphite

H2PO3-

Dihydrogen Phosphate

H2PO4-

Sulfite

SO3-2

Sulfate

SO4-2

Chromate

CrO4-2

Dichromate

Cr2O7-2

Carbonate

CO3-2

Thiosulfate

S2O3-2

Oxalate

C2O4-2

Hydrogen Phosphite

HPO3-2

Hydrogen Phosphate

HPO4-2

Phosphite

PO3-3

Phosphate

PO4-3

Ammonium

NH4+

Titanium

3+, 4+

Vanadium

3+, 5+

Chromium

3+, 2+

Manganese

2+, 4+

Iron

2+, 3+

Cobalt

2+, 3+

Nickel

2+, 3+

Copper

2+, 1+

Zinc

2+

Gallium

3+

Germanium

4+

Arsenic

3-

Selenium

2-

Zirconium

4+

Niobium

5+, 3+

Molybdenum

6+

Technetium

7+

Ruthenium

3+, 4+

Rhodium

3+

Palladium

2+, 4+

Silver

1+

Cadmium

2+

Indium

3+

Tin

4+, 2+

Antimony

3+, 5+

Tellurium

2-

Hafnium

4+

Tantalum

5+

Tungsten

6+

Rhenium

7+

Osmium

4+

Iridium

4+

Platinum

4+, 2+

Gold

3+, 1+

Mercury

2+, 1+

Thallium

1+, 3+

Lead

2+, 4+

Bismuth

3+, 5+

Polonium

2+, 4+