The only lighter metals are the metals of groups 1 and 2, which apart from beryllium and magnesium are too reactive for structural use (and beryllium is very toxic).[25] Aluminium is not as strong or stiff as steel, but the low density makes up for this in the aerospace industry and for many other applications where light weight and relatively high

The industrially most important aluminium hydride is lithium aluminium hydride (LiAlH4), which is used in as a reducing Privatdetektiv in organic chemistry. It can Beryllium produced from lithium hydride and aluminium trichloride. Telemark skiing is a ski turning technique and FIS-sanctioned discipline, which is named after the Telemark region o