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2 Ge. 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 ...
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 or a nonmetal in the carbon group that is chemically similar to silicon .
It can be prepared as a yellow sublimate at 1000 °C by reacting GeO 2 with Ge metal. The yellow sublimate turns brown on heating to 650 °C. [1] GeO is not well characterised. [1] It is amphoteric, dissolving in acids to form germanium(II) salts and in alkali to form "trihydroxogermanates" or "germanites" containing the Ge(OH) 3 − ion. [2]
Germanium monosulfide or Germanium(II) sulfide is the chemical compound with the formula Ge S. Germanium sulfide is a red-brown powder or black crystals. [1] It hydrolyzes slowly in moist air but rapidly reacts in water forming Ge(OH) 2 and then GeO. [2] It is one of a few sulfides that can be sublimed under vacuum without decomposition. [3]
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
Germanium dioxide, also called germanium(IV) oxide, germania, and salt of germanium, [1] is an inorganic compound with the chemical formula Ge O 2. It is the main commercial source of germanium. It also forms as a passivation layer on pure germanium in contact with atmospheric oxygen.
In chemistry, germanate is a compound containing an oxyanion of germanium. In the naming of inorganic compounds it is a suffix that indicates a polyatomic anion with a central germanium atom, [ 1 ] for example potassium hexafluorogermanate, K 2 GeF 6 .
An 1874 engraving showing a probably apocryphal account of Newton's lab fire. In the story, Newton's dog, Diamond, started the fire, burning 20 years of research.Newton is thought to have said: "O Diamond, Diamond, thou little knowest the mischief thou hast done."