1. Chemical Bonding
Ionic Compounds

2. Review of the Periodic Table
Each row is called a period.
All elements in a period have the same number of atomic orbitals (or shells)
Each column is called a group or family.
All elements in a group have the same number of valence electrons

3. Bohr Diagram Review Oxygen Sodium
The Bohr diagram includes all electrons for an atom. They are divide on the different energy levels.
Oxygen Sodium

4. Lewis Dot Diagrams Method of representing valence electrons
Discovered by Gilbert N. Lewis
Several examples include:
Sodium – 1 valence electron: Na
Nitrogen – 5 valence electrons: N
Bromine – 7 valence electron: Br

5. Lewis Structures
Ionic – show transfer of e-

6. Things to know about Ionic
Lewis Dot Diagrams represent?
Ionic compounds are made up of?
The electrons are being?
What is written first?
Opposite charges will?

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

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

9. 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.

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

11. Polyatomic Ions
When you have a compound that involves more than 2 elements, you must look at a Polyatomic Chart for help.
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

12. 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?

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

14. 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.

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

16. 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.

17. Practice Writing Trans
Copper (II) Fluoride
CuF2
Zinc (I) Phosphate
Zn3PO4
Nickel (IV) Oxide
NiO2 (Simplified formula)

18. Naming Transitions
When Naming the compound, you must balance the total charge, must be zero!
Look at the Anion. Determine the total sum of the charge provided by the Anion.
Look at the Cation. Remembering that the sum of the ionic compound must equal zero, determine the positive charge, and roman numeral.

19. Au2S Gold (I) Sulfide Co2O3 Copper (III) Oxide FeN Iron (III) Nitride
Practice Naming Trans
Au2S
Gold (I) Sulfide
Co2O3
Copper (III) Oxide
FeN
Iron (III) Nitride