sulphide
S 2-
fluoride
F -
chloride
Cl -
bromide
Br -
iodide
I -
bicarbonate
(hydrogen carbonate) HCO3 -
carbonate
CO3 2-
hydroxide
OH -
chlorate
CIO4 -
Nitrate
NO3 -
Nitrite
NO2 -
Sulphate
SO4 2-
Bisulphite
HSO3 -
phosphate
PO4 3-
permanganate
MNO4 -
manganate
MNO4 2-
oxide
O 2-
dichromate
CR2O7 2-