Metallic Bonding

• What do metal elements exist in?

  Giant metallic lattice structures
• Electrons in the outer shell are what?

  Delocalised- free to move and carry a charge

  Leave a + metal ion
• What is metallic bonding?

  + metal ions are electrostatically attracted to the delocalised -electrons

  Forms a lattice of closely packed + ions in a sea of delocalised electrons
• High melting points

  The more delocalised electrons there are the stronger the bonding will be and the higher the melting point
• Malleable amd ductile

  No bonds holding specific ions together - layers of + ions are separated by layers of electrons

  Layers can slide over each other without disrupting attraction
• Good thermal conducters

  Delocalised electrons can pass kinetic energy to each other
• Good electrical conductors

  Delocalised electrons are free to move and can carry a current

  Impurities can reduce electrical conductivity by reducing number of electrons that are free to carry the charge
• Insoluble

  Except in liquid metals - due to strength of metallic b