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Wikipedia:Today's featured article/March 2019

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March 1
Prediction of germanium by Mendeleev in the 1869 periodic table

Germanium is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, greyish-white metalloid in the carbon group, chemically similar to silicon and tin. In 1869, Dmitri Mendeleev predicted the existence of germanium, and later some of its properties, based on its position in his periodic table (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), and from silver, lead, and copper ores. (Full article...)


March 2
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
You can make new requests or comment on current requests at Wikipedia:Today's featured article/requests. See Wikipedia:Today's featured article for full guidelines.

March 3
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 4
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 5
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 6
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 7
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 8
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March 9
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March 10
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March 11
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March 12
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March 13
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March 14
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March 15
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March 16
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March 17
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March 18
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March 19
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March 20
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March 21
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March 22
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 23
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 24
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 25
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 26
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 27
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 28
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 29
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 30
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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March 31
The featured article for this day has not yet been chosen. The final selection is made by the TFA coordinators (Dank, Jimfbleak, Ealdgyth and Wehwalt ).
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