Metallic Bonding

• Metallic bonding in terms of electrostatic attractions

  • positive ions and delocalised electrons are usually strongly attracted to each other
  • lots of energy is needed to overcome these attractions
  • Therefore metals have high MP’s and BP’s
• why are metals good electrical conductors?

  they have delocalised electrons that move and carry charge
• why are metals malleable?

  they have layers of ions that can slide over each other when a force is applied
• How do you represent a metallic lattice by a 2-D diagram?

  e-: delocalised electrons

  +: fixed positive metal ions

  
• Why do most metals have high MP’s and BP’s?

  • strong electrostatic forces of attraction between positive metal ions and negative delocalised electrons within metal lattice structure
  • Needs a lot of energy to be broken