Germanium is a chemical element with atomic number 32 in the periodic table of chemical elements of Mendeleev ,. Presented by the symbol of Ge ( Germanium). Germanium is a typical semiconductor with gray-white color with metallic luster.
Germanium was opened in 1886 by the German chemist Clemens Winkle in mineral argirodita
 In nature Germanium occurs in sulfide ores, iron ore, found in almost all silicates.
Germanium is used in the electrical industry in semiconductor diodes transistors and other electronic devices. Germany is also widely used for making optical fiber and infrared optics.