CrO4 (-2)
chromate
Cr2O7 (-)
dichromate
NO3 (-)
nitrate
CH3COO (-)
ethanoate (acetate)
NO2 (-)
nitrite
NH4 (+)
ammonium
SO4 (-2)
sulfate
OH (-)
hydroxide
SO3 (-2)
sulfite
CO3 (-2)
carbonate
ClO (-)
hypochlorite
HCO3 (-)
bicarbonate
ClO2 (-)
chlorite
PO4 (-3)
phosphate
ClO3 (-)
chlorate
PO3 (-3)
phosphite
ClO4 (-)
perchlorate
S & P - 3 (ite)
N - 2 (ite)
Cl - Whole Range (hypo - per)
Remember This
All -2 Charges
Chromate/Carbonate/Sulphates
All -3 Charges
All Phosphates