Home 14 Si Silicon back to the periodic table
 
Atomic number   14
Symbol   Si
Atomic weight   28.0855
Density [g/cm3]   2.33
Melting point [°C]   1410
Boiling point [°C]   2477
1st Ionization energy [eV]   8.151
Electronic configuration   [Ne] 3s2 3p2
Oxidation number (most stable)   4, 4-
Atomic radius [pm]   117
Ionic radius [pm]   40 (4+)
Abundance in crustal rocks [ppm]   272000
Origin of the name   (lat.) silex = flint 
Discovery   1822 by J. J. Berzelius
Uses   pure silicon as basic material in the semiconductor technology, silicon dioxide as raw material for the glass production.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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