JD

The periodic table and structure

<<Metallic bonding<<

  • <<Metallic bonding is the electrostatic attraction between cations and delocalised electrons<<
  • <<properties:<<
    • <<electrical conductivity<<
    • <<high mp and bp due to strong, non-directional electrostatic attraction<<
    • <<the more delocalised electrons the stronger the bonding is so higher mp and bp<<
    • <<insoluble<<

]]Giant covalent lattices]]

  • ]]slilicon oxide- 4 bonds]]

  • ]]Diamond- 4 bonds]]

  • ]]graphite- 3 bonds]]

  • ]]graphene-3 bonds, 2d]]

  • ]]diamond, graphite and graphene are allotropes of carbon]]

  • ]]Properties]]

    • ]]high mb and bp]]
    • ]]don’t conduct except graphite and graphene because the have delocalised electrons]]
    • ]]insoluble because the covalent bonds are too strong to be broken]]