group 7: the halogens

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  • Group 7: the halogens
    • As you go down group 7, the halogens become ..
      • less reactive
      • higher melting point
      • higher boilin point
    • the halogens are all non-metals with coloured vapours
      • fluorine is a very reactive, poisonous yellow gas
      • chlorine is a fairly reactive, poisonous dense green gas
      • brominie is a dense, poisonous, red-brown volatile liquid
      • iodine is a dark grey crystalline solid or a purple vapour
    • halogens form ionic bonds with metals
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