Presentation on theme: "Chapter 15 – Ionic Bonding and Ionic Compounds"— Presentation transcript:
1 Chapter 15 – Ionic Bonding and Ionic Compounds 15.1 Electron Configuration in Ionic Bonding15.2 Ionic Bonds15.3 Bonding in Metals
2 15.1 Electron Configuration in Ionic Bonding Valence ElectronsUsing electron configuration for describing compound formation…Valence electrons: the electrons in the highest occupied energy level of an atom.Na = 1s22s22p63s1Cl = 1s22s22p63s23p5Use of electron dot structures, Table 15.1
3 15.1 Electron Configuration in Ionic Bonding (cont.) Electron Configurations for CationsOctet 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
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 15.7Visualizing MoleculesStructural, “ball and stick”, space-fillingChemical Bonds: Small Molecules
7 15.2 Ionic Bonds (cont.) Properties of Ionic Compounds Most are crystalline solidsLarge attractive forces between ionsHigh melting pointsCoordination 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 15.14Chem ASAP!
9 15.3 Bonding in Metals (cont.) Crystalline Structure of Metals and Alloys