The Wikipedia article of the day for March 1, 2019 is Germanium.
Germanium (Ge) is a chemical element with atomic number 32. It is a lustrous, hard, greyish-white metalloid in the carbon group, chemically similar to silicon (Si) and tin (Sn). In 1869, Dmitri Mendeleev predicted the existence of germanium (and later some of its properties) based on its position in his periodic table (extract pictured). In 1886, Clemens Winkler discovered the element in a rare mineral called argyrodite. Mendeleev's predictions closely matched the properties of germanium, and this contributed to the wider acceptance of his periodic table. Germanium is a semiconductor used in transistors and various electronic devices, fibre-optic systems, infrared optics, solar cell applications, and light-emitting diodes. It is mined primarily from sphalerite (a zinc ore), along with silver, lead, and copper ores.
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Friday, March 1, 2019
Wikipedia article of the day for March 1, 2019
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