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Naming Binary Ionic Compounds

Topic: Naming Ionic Compounds Do Now: Which element forms a compound with chlorine with the general formula MCl (where M is your unknown element) A. Rb B. Ra C. Re D. Rn. Naming Binary Ionic Compounds. Always name metal (the cation/+ ion) first 2. Write stem of nonmetal (the anion/ - ion)

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Naming Binary Ionic Compounds

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  1. Topic: Naming Ionic CompoundsDo Now: Which element forms a compound with chlorine with the general formula MCl (where M is your unknown element)A. Rb B. RaC. Re D. Rn

  2. Naming Binary Ionic Compounds • Always name metal (the cation/+ ion) first 2. Write stem of nonmetal (the anion/ - ion) 3. Add ending “ide” to nonmetal Binary = only 2 types of elements (two capital letters)

  3. Nitr Ox Fluor Phosph Sulf Chlor Arsen Selen Brom Tellur Iod Hydr is the stem for H Stems of nonmetals

  4. Metals with one oxidation state • CaO • BaS • AlN • LiCl • Al2Se3 • Na2O • K3N • MgF2 Calcium Oxide Barium Sulfide Aluminum Nitride Lithium Chloride Aluminum Selenide Sodium Oxide Potassium Nitride Magnesium Fluoride

  5. The First Step in Naming • Find metal on PT • If metal has only one oxidation state it’s easy • If metal has more than one oxidation state, there’s an extra step

  6. Metals with > 1 oxidation state • Use formula to figure out which oxidation state metal ion has • Ex: Fe can be Fe+2or Fe+3 • Name FeO and Fe2O3 • two different compounds • cannot name both iron oxide • every formula has 1 name only

  7. FeO and Fe2O3 • Compounds are electrically neutral • Oxygen is -2 1 O which is -2 FeO so Fe must be +2 Name: Iron (II) oxide (roman numeral II = charge on Fe)

  8. Each Fe is +3 Iron (III) oxide FeO and Fe2O3 • Compounds are electrically neutral • Oxygen is -2 Each O is -2 Fe2O3 There are 3 O’s 3 X (-2) = -6 Total negative charge Total positive charge must be +6

  9. Name the following Titanium (III) chloride • TiCl3 • MnO2 • Co2O3 • PdBr2 • AuCl3 • MoN • MnO • TiO Manganese (IV) oxide Cobalt (III) oxide Palladium (II) bromide Gold (III) chloride Molybdenum (III) nitride Manganese (II) oxide Titanium (II) oxide

  10. Summary for Binary Ionic Compounds Compounds are electrically neutral • Formula: positive first • If metal has more than 1 oxidation state, name has roman numeral (MOST ALL TRANSITION METALS) • Name = metal + stem of nonmetal + ide

  11. Naming compounds with polyatomics • polyatomic ions have names (Table E) • naming is parallel to binary naming • positive always written first • if (+)’ve ion is a metal, check to see how many oxidation states it has • if > 1 then name must have roman numeral • if (–)’ve is polyatomic - 2nd part of name is name of polyatomic (don’t modify ending)

  12. Name the following Sodium hydroxide • NaOH • KHCO3 • LiNO3 • CaSO4 • Al(NO3)3 • Fe(OH)2 • CuSO4 • CuSCN Potassium hydrogen carbonate Lithium nitrate Calcium sulfate Aluminum nitrate Iron (II) hydroxide Copper (II) sulfate Copper (I) thiocyanate

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