chemistry unit 2 ionic bonding

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  • chemistry unit 2
    • chemical bonding
      • when two or more elements react together compounds are formed
        • this is because the elements share electrons
          • now have a full outer shell
      • bonds
        • COVALENT
          • non-metallic elements join together
        • IONIC
          • when metallic atoms react with non-metallic atoms
      • electron number
        • group 1
          • have one electron in their outer shell.
            • EG sodium
        • group 2
          • have seven electrons in their outer shell
            • EG. chlorine


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