PolyatomicIons - NO 3 – Oxalate ion C 2 O 4 2–...

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Some Common Polyatomic Ions to Know Cations Ammonium ion NH 4 + Hydronium ion H 3 O + (In solution; no common compounds) Mercury(I) Hg 2 2+ Anions Acetate ion C 2 H 3 O 2 (Also written CH 3 CO 2 or CH 3 COO ) Carbonate ion CO 3 2– Hydrogen carbonate ion HCO 3 (Formerly called bicarbonate) Hypochlorite ion ClO Chlorite ion ClO 2 Chlorate ion ClO 3 Perchlorate ion ClO 4 Chromate ion CrO 4 2– Dichromate ion Cr 2 O 7 2– Cyanate ion OCN Thiocyanate ion SCN Cyanide ion CN Hydroxide ion OH Nitrite ion NO 2 Nitrate ion
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Unformatted text preview: NO 3 – Oxalate ion C 2 O 4 2– Permanganate ion MnO 4 – Peroxide O 2 2– Phosphate ion PO 4 3– Hydrogen phosphate ion HPO 4 2– (Also called monohydrogen phosphate) Dihydrogen phosphate ion H 2 PO 4 – Sulfite ion SO 3 2– Hydrogen sulfite ion HSO 3 – (Formerly called bisulfite) Sulfate ion SO 4 2– Hydrogen sulfate ion HSO 4 – (Formerly called bisulfate) Thiosulfate ion S 2 O 3 2–...
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