Nomenclature Unit 6 - Bonding

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

These Transition Metals only have ONE charge!!! Types of Ions Transition metals and some representative elements have more than one charge. There are two ways to name these elements… Fe2+, Fe3+ Cu+, Cu2+ Sn2+, Sn4+ Pb2+, Pb4+ These Transition Metals only have ONE charge!!! Ag+ Zn2+

Types of Ions Stock System Latin 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

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!!

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

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

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

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

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