The halogens or halogen elements are a series of nonmetal elements ... Aromatic halogen groups are far less reactive than aliphatic halogen groups, which can ...

halogen n. Any of a group of five chemically related nonmetallic elements including fluorine, chlorine, bromine, iodine, and astatine

A halogen lamp operating in its fitting with the protecting glass removed ... A close-up of a tungsten filament of a halogen car lamp after several hundred hours of use ...

The halogens or halogen elements are a series of nonmetal elements from Group 17 IUPAC Style (formerly: VII, VIIA) of the periodic table, ...

A halogen lamp is an incandescent lamp with a tungsten filament contained within an inert gas and a small amount of a halogen such as iodine or bromine. ...

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