NO31- nitrate

SO42- sulfate

NO21- nitrite

SO32- sulfite

PO43- phosphate

ClO41- perchlorate

PO33- phosphite

ClO31-     chlorate
CrO42- chromate

ClO21- chlorite

Cr2O72- dichromate

ClO1- or OCl- hypochlorite

NH41+       ammonium

OH1-  hydroxide

CN1- cyanide

CO32- carbonate
O22- peroxide

SCN1-  or NCS1- thiocyanate
MnO41- permanganate

Hg22+ mercury (I)
C2O42- oxalate

CH3COO1- or C2H3O21- acetate

S2O32- thiosulfate