Formulas and Names for Some Common Ions

ammonium
NH4 +
fluoride
F –
chloride
Cl –
bromide
Br –
iodide
I –
hydroxide
OH –
cyanide
CN –
hypochlorite
ClO –
chlorite
ClO2 –
chlorate
ClO3 –
perchlorate
ClO4 –
acetate
Ch3COO –
permanganate
MnO4 –
nitrite
NO2 –
nitrate
NO3 –
thiocyanate
SCN –
oxide
O 2-
sulfide
S 2-
hydrogen sulfite or bisulfite
HSO3 –
sulfite
SO3 2-
hydrogen sulfate or bisulfate
HSO4 –
sulfate
SO4 2-
hydrogen carbonate or bicarbonate
HCO3 –
carbonate
CO3 2-
chromate
CrO4 2-
bichromate
Cr2O7 2-
phosphate
PO4 3-
arsenate
AsO4 3-