1. Chemical Bonding
Metallic Bonding

2. Metallic Bonding Objectives:
Describe the electron-sea model of metallic bonding.
Describe the characteristics of metallic substances.

3. Metallic Bonding
Unique properties of metals are due to highly mobile (delocalized) valence electrons

4. Metallic Bonds
Metals have vacant orbitals in their highest energy levels which overlap with neighboring atoms.
Valence electrons are delocalized; move freely metal atoms’ overlapping orbitals.
Na crystal structure

5. Metallic Bonding
Metallic Bonding – bonding that occurs between metal cations and the surrounding “sea of electrons
metallic bonding and metallic properties - YouTube

6. Properties of Metals High electrical conductivity
High thermal conductivity
Luster
Malleability
Ductility
High melting and boiling points