Haleogen & Noble Gases

Halogens

• Elements in Group 7 of the Periodic Table (fluorine, chlorine, bromine, iodine, astatine)

• They react with metals to produce halides (fluorides, chlorides, bromides, iodides)

• The reactivity of the halogens increases going up the group - fluorine is the most reactive non-metal

• Chlorine & iodine can be obtained from the compunds produced by the evaporation of sea water (mostly sodium chloride & potassium iodide), but this is no longer concidered to be an economical source of iodide

Noble Gases

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