Charges of Common Polyatomic Ions

 

1+

 

Ammonium

 

 

NH41+

 

1-

 

Acetate                

Bromate

Chlorate

Cyanide

Hydroxide

Iodate

Nitrate

Permanganate

Thiocyanate

 

 

C2H3O21-

BrO31-

ClO31-

CN1-

OH1-

IO31-

NO31-

MnO41-

SCN1-

 

2-

 

Carbonate

Chromate

Dichromate

Oxalate

Peroxide

Selenate

Silicate

Sulfate

Thiosulfate

 

 

CO32-

CrO42-

Cr2O72-

C2O42-

O22-

SeO42-

SiO32-

SO42-

S2O32-

3-

 

                 Arsenate

                 Borate

                 Citrate

                 Hexacyanoferrate (III)

                 Phosphate

 

 

AsO43-

BO33-

C6H5O73-

Fe(CN)63-

PO43-