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germanium discovered concentration

Germanium is widely dispersed and has been estimated at parts per million ppm in the earths crust As a matter of fact there are no real germanium minerals, but only minerals who contain important amounts of germanium these minerals, which are listed in table , have been mined in the past in africa namibia, congo, germany and latin america bolivia

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  • Germanium   an overview   ScienceDirect Topics

    Germanium an overview ScienceDirect Topics

    Germanium is widely dispersed and has been estimated at parts per million ppm in the earths crust As a matter of fact there are no real germanium minerals, but only minerals who contain important amounts of germanium these minerals, which are listed in table , have been mined in the past in africa namibia, congo, germany and latin america bolivia

  • Germanium   a Chemical Element   Assignment Point

    Germanium a Chemical Element Assignment Point

    Density gcm oxidation states , because it seldom appears in high concentration, germanium was discovered comparatively late in the history of chemistry germanium ranks near fiftieth in the relative abundance of the elements in the earths crust

  • Germanium

    Germanium

    Pure germanium is a semiconductor with an appearance similar to elemental silicon like silicon, germanium naturally reacts and forms complexes with oxygen in nature because it seldom appears in high concentration, germanium was discovered comparatively late in the history of chemistry

  • Germanium

    Germanium

    Pronengdmenim is a chemical element with the symbol ge and atomic number it is a lustrous, hard, silver white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon germanium has five naturally

  • How the world discovered the Nazi death camps

    How the world discovered the Nazi death camps

    Jan , images of what the allies found when they liberated the first nazi death camps towards the end of world war ii brought the horror of the holocaust to global attention many of the ghastly pictures were at first held back from the broader public, partly

  • Chemistry for Kids  Elements   Germanium

    Chemistry for Kids Elements Germanium

    The most common is germanium interesting facts about germanium scientists are studying germanium for use in chemotherapy to help treat cancer dmitri mendeleev first named the element quotekasiliconquot, but it was later renamed by winkler some compounds that include germanium are useful in killing bacteria while not harming animals

  • CONCENTRATION OF GERMANIUM IN THE ASH OF

    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 argyrodite ag ges l, and the recently discovered renierite cu, fe fe,ge, zn, sn s, as ,vaes, , and none of them has been found in the united states deposits

  • 20 Interesting Facts About Germanium   Brian D  Colwell

    20 Interesting Facts About Germanium Brian D Colwell

    May , chemist clemens a winkler discovered and isolated the element germanium from the rare mineral argyrodite agges analysis indicated the sample contained silver, sulfur, mercury, and a new element he

  • Hall Coefficient of Germanium

    Hall Coefficient of Germanium

    Germanium sample, and the number of carriers of electric current per unit volume in that sample using formulae derived within the theory of the paper the hall coefficient for the germanium sample was found to be mc, and the number of carriers was found to be m the hall coefficient, and the density

  • Organic Germanium Facts and Benefits  amp  Ge 132 Dosage

    Organic Germanium Facts and Benefits amp Ge 132 Dosage

    Dec , germanium is a trace element discovered by clemens alexander winkler in the inorganic mineral is basically used in the electronics sector as a semiconductor of electricity since , inorganic forms of industrialgrade germanium have been used commercially in the semiconductor electronics industry the highest concentration is found

  • Germanium   Ge   PubChem

    Germanium Ge PubChem

    Germanium is mainly a byproduct of zinc ore processing it is a hard, grayishwhite element it has a metallic luster and the same crystal structure as diamond and it is brittle, like glassIn addition, it is important to note that germanium is a semiconductor, with electrical properties between those of a metal and an insulator the development of the germanium transistor opened the door to

  • Solved  Consider germanium with an acceptor concentration

    Solved Consider germanium with an acceptor concentration

    Consider germanium with an acceptor concentration of n a cm and a donor concentration of n d consider temperatures of t , , and k calculate the position of the fermi energy with respect to the intrinsic fermi level at these temperatures

  • Germanium   History  Uses  Facts  Physical  amp  Chemical

    Germanium History Uses Facts Physical amp Chemical

    Germanium was discovered in germanium belongs to the carbon family and used in electronic devices as semiconductors history and discovery dmitri mendeleev predicted the existence of germanium in he named it ekasilicon and proposed some of the physical characteristics of the then unknown metal

  • Dachau Concentration Camp  Facts and Memorial   HISTORY

    Dachau Concentration Camp Facts and Memorial HISTORY

    Jan , dachau, the first nazi concentration camp, opened in , shortly after adolf hitler became chancellor of germany located in southern germany,

  • Germanium

    Germanium

    Germanium was discovered in by clemins winker germaniums existence was predicted by mendeleev in he predicted the existence of germanium as ekasilicon it occurrence is of the earths crust in the element form it is a lustrous white, brittle metalloid

  • Germanium Concentrate   AMERICAN ELEMENTS

    Germanium Concentrate AMERICAN ELEMENTS

    The germanium atom has a radius of pm and a van der waals radius of pm germanium was first discovered by clemens winkler in in its elemental form, germanium is a brittle grayish white semimetallic element germanium is too reactive to be found naturally on earth in its native state

  • Germanium   Ge   PubChem

    Germanium Ge PubChem

    Germanium is mainly a byproduct of zinc ore processing it is a hard, grayishwhite element it has a metallic luster and the same crystal structure as diamond and it is brittle, like glassIn addition, it is important to note that germanium is a semiconductor, with electrical properties between those of a metal and an insulator the development of the germanium transistor opened the door to

  • Germanium   History  Uses  Facts  Physical  amp  Chemical

    Germanium History Uses Facts Physical amp Chemical

    Germanium was discovered in germanium belongs to the carbon family and used in electronic devices as semiconductors history and discovery dmitri mendeleev predicted the existence of germanium in he named it ekasilicon and proposed some of the physical characteristics of the then unknown metal

  • germanium   Properties  Uses   amp  Facts   Britannica

    germanium Properties Uses amp Facts Britannica

    Germanium ge, a chemical element between silicon and tin in group iva of the periodic table, a silverygray metalloid, intermediate in properties between the metals and the nonmetalsAlthough germanium was not discovered until by clemens winkler, a german chemist, its existence, properties, and position in the periodic system had been predicted in by the russian chemist

  • Band structure and carrier concentration of Germanium  Ge

    Band structure and carrier concentration of Germanium Ge

    Effective density of states in the conduction band n c mm c m o t cm, or n c t cm m is the number of equivalent valleys in the conduction band, m c M o is the effective mass of the density of states in one valley of the conduction band effective density of states in the

  • Review of germanium processing worldwide   ScienceDirect

    Review of germanium processing worldwide ScienceDirect

    Mar , germanium is not found in the free state but occurs at a concentration of in the earths crust spectrum, germanium forms a wide range of compounds such as bromides, chlorides, fluorides, iodides, hydrides, oxides, selenides, sulphides and tellurides chemistry,

  • MENDELEEV   S PREDICTIONS FOR    EKA SILICON

    MENDELEEV S PREDICTIONS FOR EKA SILICON

    Germanium mendeleev called it ekasilicon, meaning beyond silicon on his table chemical or physical property predicted in by mendeleev properties of germanium discovered in atomic weight about appearance dark gray metal gray metal density gcm gcm melting point high o c

  • The Escape Tunnel Discovered Beneath a Nazi Death Camp

    The Escape Tunnel Discovered Beneath a Nazi Death Camp

    Jun , a group of researchers have discovered a tunnel dug by jewish prisoners to escape a concentration camp in the forests of lithuania during the holocaust

  • Critical performance differences of monocrystalline

    Critical performance differences of monocrystalline

    Critical performance differences of monocrystalline versus polycrystalline germanium for optical applications date contributors d hibbard, b neff, b reinbolt, r klinger, m stout introduction germanium ge is a useful optical material over the midwave and longwave infrared wavelength region

  • Doped Germanium   an overview   ScienceDirect Topics

    Doped Germanium an overview ScienceDirect Topics

    Early studies on the roomtemperature recombination lifetime in germanium doped in the melt with copper were shown to be well described by a recombination energy level at e t e v Ev doubly ionized copper this follows from the doping concentration dependence illustrated in figure , where one can also observe the pronounced impact of cu doping in the melt on the

  • Electrical properties of Germanium  Ge

    Electrical properties of Germanium Ge

    The electron hall factor versus donor density T k T k babich et al resistivity versus impurity concentration, t k cuttris temperature dependences of hole mobility for different doping levels

  •  Ar 4s 3d 4p USGS Mineral Resources Program

    Ar 4s 3d 4p USGS Mineral Resources Program

    Germanium is a semiconducting metalloid with electrical properties between those of a metal and an insulator germanium was discovered in the late s within silver ore at a mine near freiberg, germany the german chemist who described the element, clemens winkler, named it germanium, after his native country

  • Germanium news and latest updates

    Germanium news and latest updates

    Germanium was discovered comparatively late in the history of chemistry, because very few minerals contain it in high concentration germanium ranks near fiftieth in relative abundance of the

  • germanium   Properties  Uses   amp  Facts   Britannica

    germanium Properties Uses amp Facts Britannica

    Germanium ge, a chemical element between silicon and tin in group iva of the periodic table, a silverygray metalloid, intermediate in properties between the metals and the nonmetalsAlthough germanium was not discovered until by clemens winkler, a german chemist, its existence, properties, and position in the periodic system had been predicted in by the russian chemist

  • Germanium   Encyclopedia com

    Germanium Encyclopedia com

    Melting point c boiling point , c density gcm most common ion ge ge germanium has chemical and physical properties similar to those of silicon it was predicted as an element quotekasiliconquot by dimitri mendeleev in from calculations made during the construction of his periodic table, and it was discovered by clemens winkler in

  • Germanium   3D Elements

    Germanium 3D Elements

    Like silicon, germanium naturally reacts and forms complexes with oxygen in nature 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 earths crust

  • Clemens Winkler and the Discovery of Germanium

    Clemens Winkler and the Discovery of Germanium

    P a third element that mendeleff had predicted was to be a member of the silicon family this ekasilicon was discovered in by clemens winkler, who named it germanium in honor of his fatherland thus the three nationalist elementsgallium in france, scandium in sweden, and germanium in germanywere all discovered within fifteen years after their prediction by the great

  • Germanium   CreationWiki  the encyclopedia of creation

    Germanium CreationWiki the encyclopedia of creation

    Germanium was discovered by a german scientist by the name of clemens winkler in it is called germanium because it was discovered in germany germanium its density, when in its natural form, is Gcm this element is a graysilver color germanium comes in two kinds of forms organogermanium compounds, and inorganic germanium

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