Disodium phosphate Sodium chloride 1. Guess the chemical formula for these compounds 2. Are they the same type of compound? 3. Are there any similarities or differences in the names of these compounds?

Naming! Ionic Compounds (Going from Formula Unit to its name)

Monatomic Ions Consist of a single atom with a positive or negative charge.

Naming Cations Metals belonging to groups 1A and 2A keep their name

Cations Positively charged ions. Always followed by a the word ion or cation. Ex. Sodium ion or Sodium cation Calcium ion Aluminum ion

Practice Monatomic Cation Name: Li Lithium Ion Be Beryllium Ion Ba Barium Ion

Anions These are negative charged ions. Naming starts with the stem of the element and then ends in an –ide. Ex. Sulfide ion or Chloride ion or nitride ion Sulf -ide

Practice Monatomic anion Name: Cl Chloride Nitrogen Nitride Oxygen Oxide

Binary Compounds A compound composed of two elements. Ex. Potassium chloride K+ and a Cl- Chemical formula of KCl Calcium bromide Ca2+ and Br- Chemical formula is CaBr2 This does not tell you the NUMBER in the chemical formula of that atom.

Binary Compounds: LiCl Lithium Chloride BeO Beryllium Oxide MgCl2 Magnesium Chloride

Stock System (transition metals) Cations who have more than one charge. To indicate which charge use Roman Numerals. Ex. Iron (II) ion or Iron (III) ion

Naming Transition Metals D-block elements Form more than one ion with different charges Place Roman numeral in parentheses after the name of the element to indicate charge. Ex: Fe name: Iron (II) Fe name: Iron (III) +2 +3

Practice with Transition Metals Try Fe3 N2 Iron (III) Nitride CuCl 3 Copper (III) Chloride

Transition metals FeCl3 Iron (III) chloride SnF2 Tin (II) fluoride