Search results
Results from the WOW.Com Content Network
Germanium is a chemical element; it has symbol Ge and atomic number 32. It is lustrous, hard-brittle, grayish-white and similar in appearance to silicon . It is a metalloid (more rarely considered a metal ) in the carbon group that is chemically similar to its group neighbors silicon and tin .
Germanium cluster anions (Zintl ions) such as Ge 4 2−, Ge 9 4−, Ge 9 2−, [(Ge 9) 2] 6− have been prepared by the extraction from alloys containing alkali metals and germanium in liquid ammonia in the presence of ethylenediamine or a cryptand. [1] [3] The oxidation states of the element in these ions are not integers—similar to the ...
Pages in category "Germanium compounds" The following 24 pages are in this category, out of 24 total. This list may not reflect recent changes. A. Arsenidogermanate; D.
Organogermanium chemistry is the science of chemical species containing one or more C–Ge bonds. Germanium shares group 14 in the periodic table with carbon, silicon , tin and lead . Historically, organogermanes are considered as nucleophiles and the reactivity of them is between that of organosilicon and organotin compounds.
The elements commonly classified as metalloids are boron, silicon, germanium, arsenic, antimony and tellurium. [ n 4 ] The status of polonium and astatine is not settled. Most authors recognise one or the other, or both, as metalloids; Herman, Hoffmann and Ashcroft, on the basis of relativistic modelling, predict astatine will be a monatomic metal.
Germanium makes up 2 parts per million of the Earth's crust, making it the 52nd most abundant element there. On average, germanium makes up 1 part per million of soil. Germanium makes up 0.5 parts per trillion of seawater. Organogermanium compounds are also found in seawater. Germanium occurs in the human body at concentrations of 71.4 parts ...
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
Germanium dichloride – GeCl 2; Germanium tetrachloride – GeCl 4; Gold(I) chloride – AuCl; Gold(III) chloride – AuCl 3; Hafnium(IV) chloride – HfCl 4;