1. Ionic bonding

3. Learning goals We are learning why and how ionic bonds form.
We are learning to draw ionic bonding using Lewis diagrams.
We are learning to name ionic compounds.

4. Ionic Bonds Attraction between positive and negative ions
Large number of ions join together.
Always have a net charge of zero.

6. Ionic bonds Involves a transferring of electrons:
Metals lose electron(s) to gain a full octet.
Non-Metals gain electron(s) to gain a full octet.
The ions are then held together electrostatically.
Law of electric charges:
Like charges repel
Unlike charges attract

8. Properties of ionic bonds
Due to strong bonds:
Hard
Brittle
High melting points
Some are soluble in water
Dissolved ionic compounds conduct electricity and are called electrolytes

10. Binary compounds Involve only two types of atoms
One metal and one non-metal
Naming
Name the cation first and anion second with an ‘ide’ ending
sodium chloride
lithium sulfide

11. Example #1 a) Ca and O b) Na and H c) Li and S
For each metal / non-metal pair below
Draw the Lewis dot diagram for the resulting compound
Write the chemical formula
Name the compound produced
a) Ca and O
b) Na and H
c) Li and S

12. With your elbow partner
On a whiteboard, complete the following:
K and O
Al and S
Ba and N

14. Complete on your own Lewis diagrams showing the bonding of:
magnesium and chlorine
lithium and oxygen
potassium and fluorine

15. Learning goals We are learning why and how ionic bonds form.
We are learning to draw ionic bonding using Lewis diagrams.
We are learning to name ionic compounds.

16. Please complete
P195 #1, 2, 7, 9