ChemistryCode 9701

Physical properties of the Group 17 elements

What this topic asks you to be able to do

  • outline the colours of chlorine, bromine and iodine and how their volatility changes from one to the next
  • outline and account for the change in the strength of the bonds within halogen molecules as you move down the group
  • interpret how volatile the elements are, drawing on instantaneous dipole–induced dipole forces