Ionic compounds

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Ionic compounds

Regular lattice structure:

  • Ionic compounds always have giant inonic lattices
  • The ions form a closely packed regular lattice arrangement
  • There are very strong electrostatic forces of attraction between oppositely charged ions in all directions
  • A simple sodium chloride crystal is one giant ionic lattice which is why salt crystals tend to be cuboid


  • Ionic compounds all have similar properties
  • They all have high melting and boiling points due to the strong attraction between the ions
  • It takes a large amount of energy to overcome this attraction
  • When ionic compunds melt, the ions are free to move and they'll carry electric current
  • They dissolve easily in water-the ions separate and are all free to move in the solution so they'll carry electric current
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