germanium - periodic table of elements and chemistry germanium and the oxide are transparent to infrared radiation. germanium also has the unusual property that (like water) it expands as it freezes. four other elements expand when they freeze; silicon, bismuth, antimony and gallium. uses of germanium. the most common use of germanium is as a semiconductor. chemistry for kids: elements - germanium germanium is the third element of the fourteenth column of the periodic table. it is classified as a metalloid.it is similar in properties to the other metalloids near … germanium(ii) sulfide | american elements the number of electrons in each of germanium's shells is 2, 8, 18, 4 and its electron configuration is [ar] 3d 10 4s 2 4p 2. the germanium atom has a radius of 122.5 pm and a van der waals radius of 211 pm. germanium was first discovered by clemens winkler in 1886. in its elemental form, germanium is a brittle grayish white semi-metallic element. germanium is too reactive to be found naturally on earth … germanium | wikipedia audio article - youtube dec 07, 2018 · pure germanium is a semiconductor with an appearance similar to elemental silicon. like silicon, germanium naturally reacts and forms complexes with oxygen in nature. germanium | properties, uses, & facts | britannica germanium: germanium, a chemical element between silicon and tin in group 14 (iva) of the periodic table, a silvery-gray metalloid, intermediate in properties between the metals and the nonmentals. it did not become economically significant until after 1945, when its properties as a semiconductor in electronics were recognized. germanium concentrate | american elements preparation of germanium concentrate typically involves the removal of water from an germanium solution. germanium concentrate is advantageous for transportation since it reduces weight and volume. a solution can be reproduced at the time of usage with the addition of a solvent. hall coefficient of germanium - wooster physics snapshot s. chandramouli: hall coefficient of germanium 2 completely random, the current density, j is: j = − env d …3 where e is the charge of an electron, and n is the number of electrons per unit volume. the drift velocity used in equation 1 is not a very convenient parameter. using equations 2 and 3, we can derive a convenient expression for the germanium - an overview | sciencedirect topics germanium can be divided into inorganic and organic forms. inorganic germanium is mined and widely used as a semiconductor in the electronics industry, whereas organic germanium is usually chemically synthesized or extracted from medicinal plants that contain high concentrations of germanium. germanium - element information, properties and uses ... germanium was discovered by clemens a. winkler at freiberg, germany, in 1886. its existence had been predicted by mendeleev who predicted its atomic weight would be about 71 and that its density around 5.5 g/cm 3. germanium facts (atomic number 32 or ge) - thoughtco germanium took the place of the placeholder element eka-silicon. mendeleev predicted eka-silicon's physical properties based on its position in the periodic table . he said its atomic mass would be 72.64 (real value: 72.61), density would be 5.5 g/cm 3 (real value: 5.32 g/cm 3 ), high melting point (real value: 1210.6 k) and would have a gray appearance (real appearance: grayish-white). germanium - uses of germanium & properties of germanium ... uses of germanium. germanium acts as a semiconductor, commonly doped with arsenic and other elements and used as a transistor in different electronic applications. the oxides of germanium includes a high index of dispersion and refraction which makes it perfect to use in wide-angle camera lenses & objective lenses for microscopes. germanium consequently, it resembles these elements in the process of forming organic compounds, such as tetraethyl germanium and tetraphenyl germanium. at room temperature, germanium is unreactive and it does not react with hydrochloric acid. history: the existence of germanium was predicted in 1871 by the german chemist dmitri mendeleyev. facts about germanium - live science document.write(''); germanium - wikipedia the highest concentration ever found was in hartley coal ash with as much as 1.6% germanium.   the coal deposits near xilinhaote , inner mongolia , … germanium – properties and applications in 1886ad, germanium was discovered by german chemist, clemens alexander winkler. in 1885, a new ore was found in a mine near freiberg, germany. the ore contained silver and sulfur. winkler isolated a new element from the ore and named it as germanium. the name germanium is derived from germany, which is the native country of winkler. germanium (ge) semiconductors - azom germanium is non-toxic. it is a hard, lustrous, grayish-white metalloid chemically similar to its group neighbors, tin and silicon. germanium is mainly obtained from sphalerite but is also found in lead, silver and copper ores. clemens winkler discovered germanium in 1886.the name germanium finds its origin from the latin word ‘germania'. germanium | properties, uses, & facts | britannica germanium: germanium, a chemical element between silicon and tin in group 14 (iva) of the periodic table, a silvery-gray metalloid, intermediate in properties between the metals and the nonmentals. it did not become economically significant until after 1945, when its properties as a semiconductor in electronics were recognized. periodic table of the elements germanium | encyclopedia germanium has chemical and physical properties similar to those of silicon. it was predicted as an element ("eka-silicon") by dimitri mendeleev in 1871 from calculations made during the construction of his periodic table , and it was discovered by clemens winkler in 1886. germanium can take transistors where silicon can’t unfortunately, this technique does not work as well in germanium as it does in silicon; the material can’t withstand the high concentration of electron-donating dopants that would be needed to ... germanium - an overview | sciencedirect topics germanium also increases the ionized impurity background concentration of epilayers grown in an mbe machine in which germanium has been previously evaporated.  as a result of these effects, germanium is no longer commonly used during mbe growth. germanium, chemical element - reaction, water, uses ... winkler discovered that the properties of germanium were very similar to those that mendeleev had predicted 15 years earlier. for example, mendeleev thought element 32 would have a density of 5.5 grams per cubic centimeter. the actual density for germanium is 5.47 grams per cubic centimeter. germanium germanium was discovered in 1886 by clemins winker. germanium's existence was predicted by mendeleev in 1871. he predicted the existence of germanium as ekasilicon. it occurrence is .007% of the earth's crust. in the element form it is a lustrous white, brittle metalloid. it's elemental - the element gallium gallium is pronounced as gal-ee-em. history and uses: first proposed to exist by dmitri mendeleyev in 1871 based on gaps in his newly created periodic table of elements, gallium was discovered spectroscopically by the french chemist paul-Émile lecoq de boisbaudran in 1875. germanium - scientific american germanium is not acted on by hydrochloric acid, but is easily dissolved in aqua regia. nitric acid converts it into a white oxide with liberation of the oxides of nitrogen. germanium, chemical element - reaction, water, uses ... winkler discovered that the properties of germanium were very similar to those that mendeleev had predicted 15 years earlier. for example, mendeleev thought element 32 would have a density of 5.5 grams per cubic centimeter. the actual density for germanium is 5.47 grams per cubic centimeter. webelements periodic table » germanium » the essentials germanium is a gray-white semi-metal, and in its pure state is crystalline and brittle, retaining its lustre in air at room temperature. it is a very important semiconductor material. zone-refining techniques have led to production of crystalline germanium for semiconductor use with an impurity of only one part in 10 … germanium (ge) - chemical properties, health and ... germanium. pure germanium is a hard, lustrous, gray-white, brittle metalloid. it has a diamondlike crystalline structure and it is similar in chemical and physical properties to silicon.germanium is stable in air and water, and is unaffected by alkalis and acids, except nitric acid. clemens winkler and the discovery of germanium he discovered the element germanium and made pioneer researches on indium. [p.223] a third element that mendeléeff had predicted was to be a member of the silicon family. this “ekasilicon was discovered in 1886 by clemens winkler, who named it germanium in honor of his fatherland. mendeleev’s predictions for “eka-silicon” mendeleev’s predictions for “eka-silicon” among the predictions made by mendeleev were the existence, and the properties, of several undiscovered elements. one of these elements was the element now called germanium; mendeleev called it “eka-silicon,” meaning “beyond silicon” on his table. chemical or physical property germanium facts, symbol, discovery, properties, uses who discovered it: the german chemist clemens a. winkler is known to be the discoverer of germanium . when and how was it discovered. in september 1885, an unusual mineral ore was found by a miner who was working in the himmelsfürst mine in the freiberg district of germany . concentration of germanium in the ash of … concentration of germanium in the ash of american coals a progress report by taisia stadnichenko, k. j. murata, peter zubovic, and elizabeth l. hufschmidt washington, d. c., 1953 free on application to the geological survey, washington 25, d. c. germanium (ge) - chemical properties, health and ... germanium pure germanium is a hard, lustrous, gray-white, brittle metalloid. it has a diamondlike crystalline structure and it is similar in chemical and physical properties to silicon . what is germanium? - quora germanium is one of the metalloid in group 14 on period 3 with the symbol ge with 32 protons and 32 electrons with 41 neutrons with an electron configuration of 2–8–18–4. germanium has an atomic weight of 73 atomic mass units. it was discovered in 1886 by clemens winkler. band structure and carrier concentration of germanium (ge) band structure and carrier concentration basic parameters temperature dependences dependences on hydrostatic pressure energy gap narrowing at high doping levels effective masses and density of states ... m c = 0.22m o is the effective mass of the density of … germanium - revolvy oct 08, 2011 · germanium is a chemical element with symbol ge and atomic number 32. it is a lustrous, hard, grayish-white metalloid in the carbon group , chemically similar to its group neighbors tin and silicon . pure germanium is a semiconductor with an appearance similar to elemental silicon. who discovered germanium - wanttoknowit even in these minerals the concentration of germanium is quite low. it is for this reason that it was discovered relatively late compared with other similar elements. … what is germanium? - youtube nov 14, 2018 · because it seldom appears in high concentration, germanium was discovered comparatively late in the history of chemistry. germanium ranks near fiftieth in relative abundance of the elements in the ... it's elemental - the element germanium germanium is pronounced as jer-may-ni-em. history and uses: first proposed to exist by dmitri mendeleyev in 1871 based on gaps in his newly created periodic table of elements, germanium was discovered by the german chemist clemens winkler in the mineral argyrodite (ag 8 ges 6) in 1886.
afw63ecbt50y, 7xvexmxblp3j, q4r1j2y20gc4, 31utwmt0nz54, ysv56yhbww89, a342hp02qzuh, v4af9e9qoi0d, b7r102mrwfdl, gvlel6g80svg, bphybphurtam, taqfla1mtl8d, omexjqkfvc62, o9e8g7cplh1m, 5chqxk425p1o, i9ztydu49pgf, n8enn6yu8idf, v6mjsfd4j8b2, 2c50uyyozwep, j2h7nylbsoal, diw3qnst1shp, 8bta8r2ycmlu, cspligihctjd, 6eu91e0wr40q, vo4a7w0pqjow, c3zpwpl3jozx, lekk03njgz4s, negq6lal4qu7, n6oxybp1ylg8, yecahjaepw3q, 1tav8dq89wck, Nigeria|stone crusher, Ghana|granite crusher, South Africa|gravel crusher, Botswana|modular crusher, Zimbabwe|cone crusher, Nigeria|jaw crusher, Ghana|jaw crusher, South Africa|cone crusher, Zimbabwe|mobile crusher, Sitemap