SEARCH Articles Figures Tables Element Halides Elemental metallic Elements hydrogen Elements metals Elements, metallic From hydrogen halides From others Halides elemental Halides of elements Halides of metals Halides reduction Hydrogen elemental Hydrogen halides Hydrogen plasma Hydrogen, and metal Hydrogenation of metals Hydrogenation plasma Hydrogenation, halides Metal halides hydrogen Metallic elements metals Metals elemental Other Hydrogen Halides Other Metal Halides Other Reductants Other metals Plasma metals Reduction Hydrogenation Reduction elements Reduction hydrogen