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Germanium

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(thing) by CentrX (6.2 mon) (print)   ?   1 C! I like it! Tue Nov 07 2000 at 21:01:45

(From the Latin Germania, "Germany") A grayish-white, brittle, crystalline, nonmetallic chemical element of the carbon family, found in composite ores, especially with silver and zinc. Ultrapure germanium is used as a semiconductor, and as its properties are markedly changed by doping with arsenic or gallium, its main use is in the manufacture of transistors. Both germanium and germanium oxide are transparent to infrared radiation and so are used in infrared spectroscopes.

Symbol: Ge
Atomic number: 32
Atomic weight: 72.61
Density (at room temperature and pressure): 5.323 g/cc
Melting point: 937.4°C
Boiling point: 2,830°C
Valence: +2, +4
Ground state electron configuration: [Ar]3d104s24p2

(thing) by SSMark82 (1.6 y) (print)   ?   I like it! Wed Dec 06 2000 at 21:48:05

Germanium
Symbol: Ge
Atomic Number: 32
Atomic Weight: 72.61
Boiling Point: 3107 K
Melting Point: 1211.5 K
Density at 300K: 5.32 g/cm3
Covalent radius: 1.22
Atomic radius: 1.52
Atomic volume: 13.60 cm3/mol
First ionization potental: 7.899 V
Specific heat capacity: 0.32 Jg-1K-1
Thermal conductivity: 59.9 Wm-1K-1
Electrical conductivity: 3x10-6106Ω-1m-1
Heat of fusion: 31.8 kJ/mol
Heat of vaporization: 334.3 kJ/mol
Electronegativity: 2.01 (Pauling's)

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(definition) by Webster 1913 (print) I like it! Tue Dec 21 1999 at 23:52:45

Ger*ma"ni*um (?), n. [NL., fr. L. Germania Germany.] Chem.

A rare element, recently discovered (1885), in a silver ore (argyrodite) at Freiberg. It is a brittle, silver-white metal, chemically intermediate between the metals and nonmetals, resembles tin, and is in general identical with the predicted ekasilicon. Symbol Ge. Atomic weight 72.3.

 

© Webster 1913.

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