Common Polyatomic Ions

Front 1

NH4+

Back 1

Ammonium

Front 2

C2H3O2-

Back 2

Acetate

Front 3

CN-

Back 3

Cyanide

Front 4

OH-

Back 4

Hydroxide

Front 5

NO2-

Back 5

Nitrite

Front 6

NO3-

Back 6

Nitrate

Front 7

ClO-

Back 7

Hypochlorite

Front 8

ClO2-

Back 8

Chlorite

Front 9

ClO3-

Back 9

Chlorate

Front 10

ClO4-

Back 10

Perchlorate

Front 11

MnO4-

Back 11

Permanganate

Front 12

HCO3-

Back 12

Bicarbonate

Front 13

CO32-

Back 13

Carbonate

Front 14

C2O42-

Back 14

Oxalate

Front 15

CrO42-

Back 15

Chromate

Front 16

SO32-

Back 16

Sulfite

Front 17

SO42-

Back 17

Sulfate

Front 18

PO33-

Back 18

Phosphite

Front 19

PO43-

Back 19

Phosphate