Thursday, April 28, 2011

Chemistry Form 4: Chapter 4 - Physical Properties of Halogen

  • The melting and boiling points increases down the group as the atomic radius increase.
  • The van der Waals become stronger and thus more heat energy is needed to overcome these forces between the molecules.
  • The physical state of halogens change gradually from gas to liquid to solid due to an increase in melting and boiling point.

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