Ionic bonding

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  • Created by: will
  • Created on: 19-10-13 16:18
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  • Ionic bonding.
    • ionic bonding is the donation of one electron from one atom to another to form + and - ions.
      • These ions are joined by an electrostatic attraction.
    • Elements in group 1 loose one electron, group 2 two electrons ect.
    • Elements in group 7 gain one electron, group 6 two electrons ect.
    • the amount of energy needed determines whether the atom gains or looses electrons.
      • Cl, it is easier to gain one electron than loose seven so it forms an anion.
      • Na, it is easier to loose one electron than it is to gain seven so it forms a cation.
    • when solid, ionic compounds form giant lattices.
      • This is because the ions repel same charges and attract opposite charges.
        • This causes them to be in a regular arrangement.
          • NaCl forms a cubic structure
    • Properties
      • The conduct electricity when molten of dissolved in water
        • This is because the ions are free to move around.
      • they have very high melting and boiling points.
        • This is because they have very strong electrostatic attractions.
      • They are soluble in water but not non-polar solvents
        • The ions are pulled apart by polar molecules like water. this shows that the compound is ionic.


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