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Polyatomic Ions

Cations Hydronium H 3 O 1+ Ammonium NH 4 1+ Mercury(I) or Mercurous Hg 2 2+. Anions arsenate AsO 4 3- borate BO 3 3- bromate BrO 3 1- bicarbonateHCO 3 1- bisulfate HSO 4 1- bisulfite HSO 3 1- carbonate CO 3 2- chlorate ClO 3 1- chlorite ClO 2 1- chromate CrO 4 2-

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Polyatomic Ions

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  1. Cations Hydronium H3O1+ Ammonium NH41+ Mercury(I) or Mercurous Hg22+ Anions arsenate AsO43- borate BO33- bromate BrO31- bicarbonateHCO31- bisulfate HSO41- bisulfite HSO31- carbonate CO32- chlorate ClO31- chlorite ClO21- chromate CrO42- cyanide CN1- cyanate CNO1- hydroxide OH1- nitrate NO31- nitrite NO21- permanganate MnO41- peroxide O22- phosphate PO43- phosphite PO33- Polyatomic Ions

  2. “common” polyatomic ions • ascorbate • picolinate • acetate • cyanate • ferrate • acetylsalicylate • pyrophosphate • propionate

  3. Nomenclature of Polyatomic Oxy Anions prefix suffix -ate per- -or- hypo + Root -or- + -ite identifies the element other than O (or H contains 1 fewer O atoms than does the -ate ion

  4. prefixes contains 1 more O atom than per: the - ate ion hypo: contains 1 fewer O atoms than the - ite ion

  5. Oxy-ions containing chlorine ClO41- per chlorate ClO31- chlorate ClO21- chlorite ClO1- hypo chlorite

  6. -ate ions 3A 4A 5A 6A 7A CO32- NO31- BO33- carbonate nitrate borate PO43- SO42- ClO31- chlorate phosphate sulfate BO43- NO21- ClO1- perborate nitrite hypochlorite

  7. -ite ions 3A 4A 5A 6A 7A NO21- PO33- SO32-ClO21- nitrite phosphite sulfite chlorite

  8. Ferrate ion aluminate zincate Name the following ions: 1). FeO42- 2). AlO21- 3). ZnO22- 4). OsO42- 5). CuO21- 6). 7). HS1- 8). HSO31- 9). HCO31- osmate cuprate TcO44- techniciate bisulfide bisulfite bicarbonate

  9. IO1- SeO42- CNO1- Give formulas for the following: 1). hypoiodite 2). selenate 3). cyanate 4). bromate 5). Peroxide 6). Ammonium 7). periodate 8). binoxalate 9). molybdate 10). perrhenate 11). tungstate 12). tellurate BrO31- O22- NH4+ IO41- HC2O41- MoO42- WO42- TeO42-

  10. Give formula for the following compounds FePO4 CuClO3 Sn(NO3)2 ferric phosphate copper (I) chlorate stannous nitrate chromium (III) sulfate silver(I) carbonate ferrous nitrite cupric permanganate plumbous chromate manganese (III) hydroxide stannic perchlorate cobaltous sulfite Cr2(SO4)3 Ag2CO3 Fe(NO2)2 Cu(MnO4)2 PbCrO4 Mn(OH)3 Sn(ClO4)4 CoSO3

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