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Magnified images of salt crystals.
An explanation of the relationship between the arrangement of the ions in a typical ionic solid like sodium chloride, and its physical properties: melting point, boiling point, brittleness, solubility and electrical behavior. This webpage is maintained by scientist and author Jim Clark, who was head of chemistry and science at Truro School in Cornwall, England until his retirement in 1997. Clark's books include Calculations in AS/A Level Chemistry, GCSE Chemistry and Edexcel IGCSE Chemistry.