Home 32 Ge Germanium back to the periodic table

Atomic number   32
Symbol   Ge
Atomic weight   72.61
Density [g/cm3]   5.32
Melting point [°C]   937.4
Boiling point [°C]   2830
1st Ionization energy [eV]   7.899
Electronic configuration   [Ar] 3d10 4s2 4p2
Oxidation number (most stable)   4
Atomic radius [pm]   122.5
Ionic radius [pm]   53 (4+)
Abundance in crustal rocks [ppm]   1.5
Origin of the name   (lat.) germania = name for Germany
Discovery   1886 by the German chemists Alexander Winkler
Uses   for the production of semi-conductors as well as for infra-red transparent special glasses.

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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