POLYATOMIC IONS MONATOMIC IONS Symbol Name Symbol Name CH3COO1– acetate ion Cd2+ cadmium ion NH41+ ammonium ion Cr2+ chromium (II) ion AsO43– arsenate ion Cr3+ chromium (III) ion C6H5COO1– benzoate ion Co2+ cobalt (II) ion HCO31– bicarbonate ion Co3+ cobalt (III) ion BrO31– bromate ion Cu1+ copper (I) ion CO32– carbonate ion Cu2+ copper (II) ion ClO31– chlorate ion Au1+ gold (I) ion ClO21– chlorite ion Au3+ gold (III) ion CrO42– chromate ion Fe2+ iron (II) ion C6H5O73– citrate ion Fe3+ iron (III) ion CN1– cyanide ion Pb2+ lead (II) ion Cr2O72– dichromate ion Pb4+ lead (IV) ion OH1– hydroxide ion Pt2+ platinum (II) ion ClO1– hypochlorite ion Pt4+ platinum (IV) ion IO31– iodate ion Sn2+ tin (II) ion PO31– phosphite ion Sn4+ tin (IV) ion NO31– nitrate ion Ti3+ titanium (III) ion NO21– nitrite ion Ti4+ titanium (IV) ion C2O42– oxalate ion W4+ tungsten (IV) ion ClO41– perchlorate ion W5+ tungsten (V) ion IO41– periodate ion U3+ uranium (III) ion MnO41– permanganate ion U4+ uranium (IV) ion PO43– phosphate ion U5+ uranium (V) ion SiO32– silicate ion U6+ uranium (VI) ion SO42– sulfate ion V3+ vanadium (III) ion SO32– sulfite ion V4+ vanadium (IV) ion S2O32– thiosulfate ion V5+ vanadium (V) ion
POLYATOMIC IONS Symbol Name CH3COO1– acetate ion NH41+ ammonium ion AsO43– arsenate ion C6H5COO1– benzoate ion HCO31– bicarbonate ion BrO31– bromate ion CO32– carbonate ion ClO31– chlorate ion ClO21– chlorite ion CrO42– chromate ion C6H5O73– citrate ion CN1– cyanide ion Cr2O72– dichromate ion OH1– hydroxide ion ClO1– hypochlorite ion IO31– iodate ion PO31– phosphite ion NO31– nitrate ion NO21– nitrite ion C2O42– oxalate ion ClO41– perchlorate ion IO41– periodate ion MnO41– permanganate ion PO43– phosphate ion SiO32– silicate ion SO42– sulfate ion SO32– sulfite ion S2O32– thiosulfate ion MONATOMIC IONS Symbol Name Cd2+ cadmium ion Cr2+ chromium (II) ion Cr3+ chromium (III) ion Co2+ cobalt (II) ion Co3+ cobalt (III) ion Cu1+ copper (I) ion Cu2+ copper (II) ion Au1+ gold (I) ion Au3+ gold (III) ion Fe2+ iron (II) ion Fe3+ iron (III) ion Pb2+ lead (II) ion Pb4+ lead (IV) ion Pt2+ platinum (II) ion Pt4+ platinum (IV) ion Sn2+ tin (II) ion Sn4+ tin (IV) ion Ti3+ titanium (III) ion Ti4+ titanium (IV) ion W4+ tungsten (IV) ion W5+ tungsten (V) ion U3+ uranium (III) ion U4+ uranium (IV) ion U5+ uranium (V) ion U6+ uranium (VI) ion V3+ vanadium (III) ion V4+ vanadium (IV) ion V5+ vanadium (V) ion