Chapter%202_5 - Nomenclature A How to Guide to Chemical...

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Nomenclature A How to Guide to Chemical Fluency Inorganic Compounds Oxyanions (Purgatory) Acids Binary Compounds Organic Compounds
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General Rules for Naming Compounds Cations Metallic cations use their given atomic name. Polyatomic, non-metal cations given ium ending NH 4 + ammonium ion H 3 O + hydronium ion If the cation has multiple oxidation states you must indicate the charge using (roman numerals). Examples: CuCl Copper(I)Chloride CuCl 2 Copper(II)Chloride Anions Most anions named by replacing ending with ide . Oxyanions names depend on the number of oxygens in the molecule. per____ate _______ate _______ite hypo___ite Oxyanions containing H + atom are named with hydrogen prefix. HSO 4 - hydrogen sulfate H 2 PO 4 - dihydrogen phosphate •Determine if compound is ionic or molecular Ionic typically metal + non-metal examples: Na 2 SO 4 , MgCl 2 , FeI 3 •Name cation first followed by anion Molecular typically non-metals examples: H 2 SO 4 , HCl, CO 2 , NH 3
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Ion Charges
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Naming Molecular Compounds 1.
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