Common Polyatomic Ions

Front 1

NH4+

Back 1

ammonium

Front 2

OH-

Back 2

hydroxide

Front 3

CO3 2-

Back 3

carbonate

Front 4

HCO3-

Back 4

bicarbonate

Front 5

NO3-

Back 5

nitrate

Front 6

NO2-

Back 6

nitrite

Front 7

PO4 3-

Back 7

phosphate

Front 8

SO4 2-

Back 8

sulfate

Front 9

SO3 2-

Back 9

sulfite

Front 10

CN-

Back 10

cyanide

Front 11

Cr2O7 2-

Back 11

dichromate

Front 12

CrO4 2-

Back 12

chromate

Front 13

MnO4 -

Back 13

permanganate

Front 14

C2O4 2-

Back 14

oxalate

Front 15

Ch3COO -

Back 15

acetate

Front 16

ClO4 -

Back 16

perchlorate

Front 17

ClO3 -

Back 17

chlorate