1. Chapter 15 – Ionic Bonding and Ionic Compounds
15.1 Electron Configuration in Ionic Bonding
15.2 Ionic Bonds
15.3 Bonding in Metals

2. 15.1 Electron Configuration in Ionic Bonding
Valence Electrons
Using electron configuration for describing compound formation…
Valence electrons: the electrons in the highest occupied energy level of an atom.
Na = 1s22s22p63s1
Cl = 1s22s22p63s23p5
Use of electron dot structures, Table 15.1

3. 15.1 Electron Configuration in Ionic Bonding (cont.)
Electron Configurations for Cations
Octet Rule: In forming compounds, atoms tend to achieve the electron configuration of a noble gas.

4. 15.1 Electron Configuration in Ionic Bonding (cont.)
Electron Configurations for Anions

5. Chapter 15 Assignment
CPQ #1 pg.432
#20,21,22,23,25,26,28,29,30,31,32

6. 15.2 Ionic Bonds Formation of Ionic Compounds
Ionic Bond: the force of attraction between two oppositely charged ions by electrostatic attraction.
Ionic Compounds…Figure 15.7
Visualizing Molecules
Structural, “ball and stick”, space-filling
Chemical Bonds: Small Molecules

7. 15.2 Ionic Bonds (cont.) Properties of Ionic Compounds
Most are crystalline solids
Large attractive forces between ions
High melting points
Coordination Number: the number of ions of opposite charge that surround an ion in a crystal.
Conductivity of ionic solutions: Fig

8. 15.3 Bonding in Metals Metallic Bonds and Metallic Properties
Metallic bonds consist of the attraction of the free-floating valence electrons for the positively charged metal ions. These bonds are the forces of attraction that hold metals together. Figure 15.14
Chem ASAP!

9. 15.3 Bonding in Metals (cont.)
Crystalline Structure of Metals and Alloys

10. Chapter 15 Assignments CPQ #1 pg.432 CPQ #2 pg.432
#20,21,22,23,25,26,28,29,30,31,32
CPQ #2 pg.432
#33,34,35,37,38,39,40,41