Halide
A halide is a binary compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative than the halogen. Most salts are halides. All Group I Earth metals form halides with the halogens and they are white solids. Metal halides are used in high-intensity discharge lamps, such as in modern street lights, because they are more energy-efficient than mercury-vapor lamps, and have much better colour rendition than orange high-pressure sodium lamps.
Examples
- sodium chloride (NaCl)
- fluorine chloride (FCl)
- potassium iodide (KI)
- lithium chloride (LiCl)