group 7- the halogens

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  • fluorine-yellow gas/MP=-220 degrees/BP=-88 degrees
    • group 7- the halogens
      • bromine-orange liquid/MP=-7 degrees/BP= 59 degrees
      • chlorine-green gas/MP=-101 degrees/BP=-55 degrees
      • iodine-purple solid/MP=114 degrees/BP= 184 degrees
      • fluorine is more reactive that iodine because the outer electron is closer to the positive nucleus.there is more barrier electron shells therefore the attraction is weaker.
      • a displacement reaction is when a more reactive halogen displaces a less reactive halogen
      • all of the halogens are non-metals,dont conduct electricity,poisonus and smelly,and are brittle when solid

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