Bonding: covalent, ionic and metallic

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  • Bonding
    • Covalent
      • TOUCHING dot and cross diagrams, the circles(outer shells) must be touching
      • shared pair of electrons between non metals
      • EACH ATOM IN THE BOND SHARES THE SAME NUMBER OF ELECTRONS
    • Ionic
      • Brackets, as the atom becomes an ion,charges go OUTSIDE the box
      • separate dot and cross diagrams
    • Metallic
      • happens inside metals
      • Positive metal ions are surrounded by a sea of delocalised electrons

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