A chemical compound that contains two halogen atoms bonded to a central atom or group.
From 'di-' (two) and 'halide,' derived from halogen elements (Group 17 of the periodic table). The '-ide' suffix marks binary chemical compounds.
Dihalides include some of the most useful industrial chemicals—from refrigerants to solvents—but also some of the most destructive, like the CFCs that nearly destroyed the ozone layer.
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