Presentation on theme: "Chapter 15 – Ionic Bonding and Ionic Compounds"— Presentation transcript:
1Chapter 15 – Ionic Bonding and Ionic Compounds 15.1 Electron Configuration in Ionic Bonding15.2 Ionic Bonds15.3 Bonding in Metals
215.1 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
315.1 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.
415.1 Electron Configuration in Ionic Bonding (cont.) Electron Configurations for Anions
615.2 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
715.2 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
815.3 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!
915.3 Bonding in Metals (cont.) Crystalline Structure of Metals and Alloys