Equivalents | Periodic Table | Assignments
POLYATOMIC IONS
1- Charge
2- Charge
3- Charge
C2H3O2- Acetate HPO42- Hydrogen phosphate PO43- Phosphate 
HSO3- Hydrogen sulfite C2O42- Oxalate  PO33- Phosphite
HSO4- Hydrogen sulfate O22- Peroxide  
HCO3- Hydrogen carbonate  SO32- Sulfite   
NO2- Nitrite  SO42- Sulfate 
1+ Charge
NO3- Nitrate  CO32- Carbonate  NH4+ Ammonium 
CN- Cyanide  CrO42- Chromate   
OH- Hydroxide  CrO72- Dichromate   
MnO4- Permanganate  SiO32- Silicate  
CIO- Hypochlorite B3O42- Borate  
CIO2- Chlorite  B4O72- Tetraborate  
CIO3- Chlorate     
CIO4- Perchlorate    
H2PO4- Dihydrogen phosphate     
NH2- Amide    
IO3- Iodate    
BrO3- Bromate