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

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Presentation on theme: "Chapter 15 – Ionic Bonding and Ionic Compounds 15.1Electron Configuration in Ionic Bonding 15.2Ionic Bonds 15.3Bonding in Metals."— Presentation transcript:

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

2 15.1Electron 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 = 1s 2 2s 2 2p 6 3s 1  Cl = 1s 2 2s 2 2p 6 3s 2 3p 5  Use of electron dot structures, Table 15.1

3 15.1Electron 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 15.1Electron 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 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 15.3Bonding 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 Chem ASAP!

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

10 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


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