Metal halides are compounds between metals and halogens. Some, such as sodium chloride are ionic, while others are covalently bonded. Covalently bonded metal halides may be discrete molecules, such as uranium hexafluoride, or they may form polymeric structures, such as palladium chloride.
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Sodium chloride crystal structure
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Discrete UF6 molecules
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Infinite chains of one form of palladium chloride
Read more about Metal Halides: Preparation, Structure and Reactivity, Halide Ligands, Applications
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