1. Chemical Bonding
Ionic Compounds

2. B. Lewis Structures
What do Lewis Dot Diagrams represent: show the transfer of valence e-

3. Things to know about Ionic
Ionic compounds are made up of?
Metal (cation) and Nonmetal (anion)
The electrons are being?
Transferred
What is written first?
Metal (cation)
Opposite charges will?
Attract

4. How to write a formula S.O.X.S Ionic Formulas
Overall net charge must equal zero.
S.O.X.S
Symbols -> Oxidation # -> Crisscross -> Simplify
Don’t show charges in the final formula.

5. Writing Formula Practice
Potassium Chloride
K+ Cl-
 KCl
Aluminum Bromide
Al+3 Br-
 AlBr3
Beryllium Sulfide
Be+2 S-2
 BeS = Reduce

6. Let’s Practice Ionic Formulas…
Examples…
Back of sheet HW!
On to writing Ionic NAMES…

7. How to Name an Ionic Compound
Ionic Nomenclature
How to Name an Ionic Compound
Write the name of the Cation (Metal) first. It comes straight off the periodic table.
Change ending of the Anion (Nonmetal) to end in -ide.

8. List of –ides…

9. Naming Practice
Al2O3
Aluminum Oxide
CaS
Calcium Sulfide
Na3P
Sodium Phosphide

10. Let’s practice Ionic names…
Dice or Speed Dating
Back of Practice sheet=HW

11. Writing with Transitions
When a Transition metal is involved in the bond, you must identify which form of the atom is bonding.
These atoms can have different oxidation numbers.
Look for the Roman Numeral in the name when writing the formula. *The Roman numeral is the oxidation number of the transition metal!

12. Do you know your Roman Numerals???

13. Practice Writing Transitions
Copper (II) Fluoride
CuF2
Zinc (I) Phosphide
Zn3P
Nickel (IV) Oxide
NiO2 (Simplified formula)

14. Naming Transitions REVERSE CRISS-CROSS!!!!
*(Just check the anion charge to see if the formula was reduced)

15. Au2S *stop and label!! Gold(I) Sulfide Co2O3 Copper(III) Oxide FeN
Practice Naming T.M.s
Au2S *stop and label!!
Gold(I) Sulfide
Co2O3
Copper(III) Oxide
FeN
Iron(III) Nitride

16. TM exceptions
(Al+3)
Zn always +2
Ag always +1

17. Polyatomic Ions
When you have a compound that involves more than 2 elements, you must look at a Polyatomic Chart for help(back of your PT).
When writing formulas, keep these ions in parentheses.
These ions will also have different endings (-ate) (-ite)
Helpful for determining between individual atoms and polyatomic ions

18. Writing a Formula
You need to determine if a Polyatomic Ion is present!
Look at the ending of the name
(-ATE) or (-ITE)
What are some exceptions???
What if the ending is (-IDE)?
What will you do then?

19. Writing Polyatomics KNO3 Aluminum Sulfide Al2S3 Barium Phosphite
Potassium Nitrate
KNO3
Aluminum Sulfide
Al2S3
Barium Phosphite
Ba3(PO3)2

20. Naming Polyatomics
Look for more than two elements. That’s means a Polyatomic is present.
Match up the polyatomics and write the correct names and ending straight from the chart.

21. Practice w/ Polyatomics
CaSO4
Calcium Sulfate
Ga(IO3)3
Gallium Iodate