1. 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?

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

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

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

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

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

7. 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

8. Practice Monatomic anion
Name: Cl
Chloride
Nitrogen
Nitride
Oxygen
Oxide

9. 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.

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

11. 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

12. 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

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

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