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Nomenclature

Nomenclature. Unit 6 - Bonding. Types of Ions. Monatomic = 1 atom Representative elements TYPICALLY have only one possible charge Names Cations = name of the element Ca 2+ = Calcium ion Anions = remove ending, add “–ide” N 3- = Nitride. Types of Ions.

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Nomenclature

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  1. Nomenclature Unit 6 - Bonding

  2. Types of Ions • Monatomic = 1 atom • Representative elements TYPICALLY have only one possible charge Names • Cations = name of the element • Ca2+ = Calcium ion • Anions = remove ending, add “–ide” • N3- = Nitride

  3. Types of Ions • Transition metals and some representative elements have more than one charge. • There are two ways to name these elements…

  4. Types of Ions • Stock System • Element name with charge in parentheses (Roman Numerals) • Copper (I) = Cu+ • Latin System • Latin root + suffix • - ous = Lower charge • - ic = Higher charge • Ferric and Ferrous

  5. Types of Ions • Polyatomic Ions = A charged GROUP of bonded atoms • Acts as ONE UNIT in an ionic bond • Cations: Only NH4+ • Anions: More common as polyatomics • Look at the back of the periodic table!!

  6. Naming Ionic Compounds • Cation is always named first (No # prefixes) • Cation  take the name of the element • Transition metals  use the anion to find the charge of the cation • (Roman numeral = charge) • Anion • Monatomic  end in –ide • Polyatomic  name from chart

  7. Naming • Practice…..Practice…..Practice • CaF2 • calcium fluoride • Li2S • Lithium sulfide • FeCl2 • Iron (II) chloride • FeCl3 • Iron (III) chloride

  8. Naming • PtO2 • Platinum (IV) oxide • CuBr • Copper (I) bromide • Zn3N2 • Zinc (II) nitride (Zn is +2) • Sn3P2 • Tin (II) phosphide

  9. Naming • Ternary: • Ca(OH)2 • Calcium hydroxide • NaSCN • Sodium thiocyanate • Al2(CrO4)3 • Aluminum chromate • Mg(NO2)2 • Magnesium nitrite

  10. Naming • NH4Cl • Ammonium chloride • Au2(CO3)3 • Gold (III) carbonate • Pb(CN)4 • Lead (IV) cyanide • FePO4 • Iron (III) phosphate

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