Nucleophillic substitution

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  • Created by: EleAC
  • Created on: 03-06-16 12:44

Halogenoalkanes:

  • Their C--X bond is polar because halogens are more electronegative than carbon. Halogens become less electronegative as you go down the group.
  • Their polar bonds are not polar enough to allow the halogenoalkanes to be soluble in water, but mixing them with hydrocarbons allows then to be used as dry cleaning fluids.
  • Boiling point increases with increased chain length because there are more electrons so stronger van der Waals forces - increased branching of the chain will lower melting point.
  • The bonds get weaker as you go down the group because the larger the atom, the further away the shared

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