Common Polyatomic Ions List

Front 1

Ammonium

Back 1

NH4+

Front 2

Nitrite

Back 2

NO2-

Front 3

Nitrate

Back 3

NO3-

Front 4

Sulfite

Back 4

SO32-

Front 5

Sulfate

Back 5

SO42-

Front 6

Hydrogen Sulfate

Back 6

HSO4-

Front 7

Hydroxide

Back 7

OH-

Front 8

Cyanide

Back 8

CN-

Front 9

Phosphate

Back 9

PO43-

Front 10

Hydrogen Phosphate

Back 10

HPO42-

Front 11

Dihydrogen Phosphate

Back 11

H2PO4-

Front 12

Carbonate

Back 12

CO32-

Front 13

Hydrogen Carbonate

Back 13

HCO3-

Front 14

Chlorite

Back 14

CIO2-

Front 15

Hypochlorite

Back 15

CHO-

Front 16

Chlorate

Back 16

CIO3-

Front 17

Perchlorate

Back 17

CIO4-

Front 18

Acetate

Back 18

C2H3O2-

Front 19

Permanganate

Back 19

MnO4-

Front 20

Dichromate

Back 20

Cr2O72-

Front 21

Chromate

Back 21

CrO42-

Front 22

Peroxide

Back 22

022-

Front 23

Bromate

Back 23

BrO3-