<p> Appendix-Ions </p><p>These are all of the ions you MUST master in Chem 2</p><p>These are examples of type I cations which can be determined from the periodic table</p><p>METAL Symbol Ion Group Number Lithium Li+ 1A Sodium Na+ 1A Potassium K+ 1A Magnesium Mg2+ 2A Calcium Ca2+ 2A Barium Ba2+ 2A Aluminum Al3+ 3A</p><p>These are the type II metals with specific charges</p><p>METAL Symbol Ion Name Older Name Chromium Cr2+ chromium (II) chromous Cr3+ chromium (III) chromic Iron Fe2+ iron (II) ferrous Fe3+ iron (III) ferric Cobalt Co2+ cobalt (II) cobaltous Co3+ cobalt (III) cobaltic Copper Cu+ copper (I) cuprous Cu2+ copper (II) cupric Tin Sn2+ tin (II) stannous Sn4+ tin (IV) stannic 2+ Mercury Hg2 mercury (I) mercurous Hg2+ mercury (II) mercuric Lead Pb2+ lead (II) plumbous Pb4+ lead (IV) plumbic</p><p>These are extra but also behave similarly to those above.</p><p>Manganese Mn2+ manganese (II) Nickel Ni2+ nickel (II) Silver Ag+ Zinc Zn2+</p><p>These are common anions that can also be determined from the periodic table</p><p>NonMETAL Symbol Ion Group Number Fluoride F- 7A Chloride Cl- 7A Bromide Br- 7A Iodide I- 7A Oxide O2- 6A Sulfide S2- 6A Nitride N3- 5A These are the polyatomic ions </p><p>ANION Formula ANION Formula - - acetate C2H3O2 hypochlorite ClO 2- - carbonate CO3 chlorite ClO2 - hydrogen carbonate chlorate ClO3 - - or bicarbonate HCO3 perchlorate ClO4 - - hydroxide OH permanganate MnO4 - 2- nitrate NO3 sulfate SO4 - 2- nitrite NO2 sulfite SO3 2- chromate CrO4 hydrogen sulfite 2- - dichromate Cr2O7 (or bisulfite) HSO3 3- phosphate PO4 hydrogen sulfate 2- - monohydrogen phosphate HPO4 (or bisulfate) HSO4 + 2- ammonium NH4 peroxide O2 cyanide CN- hypobromite BrO- 2- - oxalate C2O4 bromite BrO2 - - dihydrogen phosphate H2PO4 bromate BrO3 3- - borate BO3 perbromate BrO4 hypoiodite IO- - iodite IO2 - iodate IO3 - periodate IO4</p>