Metallic Bonding

• What is metallic bonding?

  Metallic bonding is the electrostatic attraction between positively charged metal ions and a sea of delocalised electrons.
• List three properties of metals and explain how metallic structure causes each property

  1. Most metals are solid at room temperature- this is because their electrostatic forces are strong so they require a lot of energy to break
  2. Good conductors of electricity and heat- the delocalised electrons carry electrical charge and thermal enough through the while structure
  3. Most medals are malleable- the layers of atoms in a metal can slide over each other making metals malleable
• Explain why alloys are harder than pure metals:

  The atoms are more closely packed and have some bigger atoms so they have more energy