1.42: Understand Why Compounds with Giant Ionic Lattices have High Melting and Boiling Points

GIANT IONIC LATTICE: Giant three dimensional lattice structure held together by the strong attraction between oppositely charged ions

Example:

Diagram showing the Lattice Structure of Sodium Chloride

MELTING AND BOILING POINT OF COMPOUNDS WITH GIANT IONIC LATTICES:

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• Giant ionic lattices are held together by the strong attraction between oppositely charged ions with many of these ions and bonds in structure
• Large amounts of heat energy is therefore needed to overcome these forces of attraction and break down the bonds