Germanium metal is a semimetal of light gray with a metallic sheen. He is very fragile and strategically important material that is used to make optical devices that transmit infrared light. Fiber optic systems, infrared optics and semiconductor diodes made of germanium are commonly used in computer technology and in night vision devices.
Melting point: 937 ° C;
Boiling point: 2830 ° C;
Density 5,32 g / cm3
In mid-1885, at a mine near Freiberg, Saxony, a new mineral was discovered and named argyrodite because of its high silver content. The chemist Clemens Winkler analyzed this new mineral, which proved to be a combination of silver, sulfur, and a new element. Winkler was able to isolate the new element in 1886 and found it similar to antimony. He initially considered the new element to be eka-antimony, but was soon convinced that it was instead eka-silicon.
Under standard conditions, germanium is a brittle, silvery-white, semi-metallic element. This form constitutes an allotrope known as α-germanium, which has a metallic luster and a diamond cubic crystal structure, the same as diamond. Elemental germanium starts to oxidize slowly in air at around 250 °C, forming GeO2
Major end uses for germanium in 2018, worldwide, were estimated to be: 35% for fiber-optics, 30% infrared optics, 15% polymerization catalysts, and 15% electronics and solar electric applications. Remaining 5% went into such uses as phosphors, metallurgy, and chemotherapy.
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Germanium metal chemical properties:https://en.wikipedia.org/wiki/Germanium
Full list of rare-earth metal products:https://tradingwm.ae/product-category/metal-products/rare-earth-metals/
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