Chapter 15 – Ionic Bonding and Ionic Compounds

15.1 Electron Configuration in Ionic Bonding

15.2 Ionic Bonds15.3 Bonding in Metals

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

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.

15.1 Electron Configuration in Ionic Bonding (cont.)

Electron Configurations for Anions

Chapter 15 Assignment

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

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: Sma

ll Molecules

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. 15.11

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!

15.3 Bonding in Metals (cont.) Crystalline

Structure of Metals and Alloys

Chapter 15 Assignments

CPQ #1 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