The Periodic Table, C3

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  • Created by: Elly
  • Created on: 13-02-11 15:40

Alkali Metals

  • they are in group 1
  • really reactive
  • soft solids at room temperature
  • low melting and boiling points (this decreases as it goes down the group)
  • low densities - so lithium, sodium and potassium float on water
  • they all react with air and water (reaction with water produces hydrogen gas and a metal hydroxide that is a strong alkali)
  • they all have one electron in their outer shell, and lose this electron in reactions toform ionic compounds in which their ions have a single positive charge, e.g. Na+
  • the group 1 elements get more reactive going down the group.


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