Its dioxide forms crystals called quartz.
One protecting group incorporating this element is frequently removed by the quaternary ammonium salt TBAF. Convenient variations on the aldol and Michael reactions developed by Mukaiyama employ this element in replacing the nucleophilic intermediate with a stable reagent. Rods of this material may be grown using the (*) decomposition of its trichloro acid, in the Siemens process. This element is substituted with four methyl groups in an internal standard for NMR spectroscopy. Its dioxide forms crystals called quartz. For 10 points, name this element used to manufacture computer chips.
One protecting group incorporating this element is frequently removed by the quaternary ammonium salt TBAF.
{silicon}