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  2. Germanium compounds - Wikipedia

    en.wikipedia.org/wiki/Germanium_compounds

    Germanium compounds are chemical compounds formed by the element germanium (Ge). Germanium is insoluble in dilute acids and alkalis but dissolves slowly in hot concentrated sulfuric and nitric acids and reacts violently with molten alkalis to produce germanates ([GeO. 3]2−. ). Germanium occurs mostly in the oxidation state +4 although many +2 ...

  3. Germanium - Wikipedia

    en.wikipedia.org/wiki/Germanium

    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. Like silicon, germanium naturally reacts and forms ...

  4. Germanium dioxide - Wikipedia

    en.wikipedia.org/wiki/Germanium_dioxide

    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.

  5. Carbon group - Wikipedia

    en.wikipedia.org/wiki/Carbon_group

    synthetic element. The carbon group is a periodic table group consisting of carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl). It lies within the p-block. In modern IUPAC notation, it is called group 14. In the field of semiconductor physics, it is still universally called group IV.

  6. Properties of nonmetals (and metalloids) by group - Wikipedia

    en.wikipedia.org/wiki/Properties_of_nonmetals...

    As a metalloid the chemistry of silicon is largely covalent in nature, noting it can form alloys with metals such as iron and copper. The common oxide of silicon (SiO 2) is weakly acidic. Germanium. Germanium is a shiny, mostly unreactive grey-white solid with a density of 5.323 g/cm 3 (about two-thirds that of iron), and is hard (MH 6.0) and ...

  7. Germanium oxide - Wikipedia

    en.wikipedia.org/wiki/Germanium_oxide

    Germanium oxide. Germanium oxide may refer to: Germanium dioxide, GeO 2, the best known and most commonly encountered oxide of germanium containing germanium (IV) Germanium monoxide, GeO, a stable but not well characterised compound containing germanium (II) Category: Set index articles on chemistry.

  8. Bismuth germanate - Wikipedia

    en.wikipedia.org/wiki/Bismuth_germanate

    Bismuth germanium oxide or bismuth germanate is an inorganic chemical compound of bismuth, germanium and oxygen. Most commonly the term refers to the compound with chemical formula Bi 4 Ge 3 O 12 (BGO), with the cubic evlitine crystal structure, used as a scintillator. (The term may also refer to a different compound with formula Bi 12 GeO 20 ...

  9. Properties of metals, metalloids and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Properties_of_metals...

    The chemical elements can be broadly divided into metals, metalloids, and nonmetals according to their shared physical and chemical properties.All elemental metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metallic elements; and have at least one basic oxide.