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NAMING IONIC COMPOUNDS: METAL CHARGES

NAMING IONIC COMPOUNDS: METAL CHARGES . Some metals have more than one common ion: iron: Fe 2+ or Fe 3+ copper: Cu 1+ or Cu 2+ tin: Sn 2+ or Sn 4+ Use STOCK system or CLASSICAL system to name these compounds. NAMING IONIC COMPOUNDS: STOCK SYSTEM . Roman numeral = charge of the ion

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NAMING IONIC COMPOUNDS: METAL CHARGES

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  1. NAMING IONIC COMPOUNDS: METAL CHARGES Some metals have more than one common ion: • iron: Fe2+ or Fe3+ • copper: Cu1+ or Cu2+ • tin: Sn2+ or Sn4+ Use STOCK system or CLASSICAL system to name these compounds.

  2. NAMING IONIC COMPOUNDS: STOCK SYSTEM Roman numeral = charge of the ion • Fe2+ is named iron (II) • Fe3+ is named iron (III) • Cu1+ = copper (I) • Cu2+ = copper (II)

  3. NAMING IONIC COMPOUNDS: STOCK SYSTEM examples: FeCl2iron (II) chloride PbF4lead (IV) fluoride Cu2O copper (I) oxide SnS2tin (IV) sulfide

  4. NAMING IONIC COMPOUNDS: CLASSICAL SYSTEM root word for element + new suffix • –ous = lower charged ion • –ic = higher charged ion • Fe2+ = ferrous ion, Fe3+ = ferric ion • Cu1+ = cuprous ion, Cu2+ = cupric ion

  5. NAMING IONIC COMPOUNDS: CLASSICAL SYSTEM examples: FeCl2ferrous chloride PbF4plumbic fluoride Cu2O cuprous oxide SnS2stannic sulfide

  6. WRITING FORMULAS examples: chromic bromide CrBr3 mercury (II) nitride Hg3N2 cobaltous oxide CoO iron (III) iodide FeI3

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