For 10 points, name this semiconducting metalloid with symbol Si.
This element appears at the center of a compound that is used as a standard in NMR; that compound has four methyl groups attached to this element. Large, ultra-pure ingots of this element are industrially produced using boules in the Czochralski process, which sees this element melted in a crucible and suitably doped before being drawn into a wafer. Diatoms integrate this element into their cell walls. It appears in minerals like pyroxene, mica, and quartz, and it is the second-most-abundant element in the crust. Astrobiologists take an interest in this material as an alternate to carbon in extraterrestrial life. For 10 points, name this semiconducting metalloid with symbol Si.
This element appears at the center of a compound that is used as a standard in NMR; that compound has four methyl groups attached to this element.
silicon [accept Si until it is read; do not accept "silica"]