Chem Misc – Polyatomic Ions

Common Polyatomic Ions

 

Group 1

 

NH4+ Ammonium
 1
NO3 Nitrate
NO2 Nitrite
CO32- Carbonate
CO22- Carbonite
 1
SO42- Sulfate
SO32- Sulfite
PO43- Phosphate
PO33- Phosphite
 1
OH Hydroxide
CN Cyanide
C2H3O2 Acetate

 

 

Group 2

 

H3O+ Hydronium
 1
ClO4 Perchlorate
ClO3 Chlorate
ClO2 Chlorite
ClO Hypochlorite
 1
BrO4 Perbromate
BrO3 Bromate
BrO2 Bromite
BrO Hypobromite
 1
IO4 Periodate
IO3 Iodate
IO2 Iodite
IO Hypoiodite

 

Group 3

 

MnO4 Permanganate
CrO42- Chromate
Cr2O72- Perchromate
S2O32- Thiosulfate
O22- Peroxide

 

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