The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. However, today it is primarily obtained from the smelting of zinc ores and as a byproduct of burning certain types of coal. Just the facts. = 70. atomic no. The number of atoms/cm 2 in Ge or Si is of the the order of 10 22. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Its ores are rare. At room temperature (300 K), for Ge (Si) per cm 3 . There are five naturally occurring isotopes of germanium: germanium-70, germanium-72, germanium-73, germanium-74, and germanium-76. It forms a large number of organometallic compounds. Atomic Number: 32 Symbol: Ge Atomic Weight: 72.61; Discovery: Clemens Winkler 1886 (Germany) Electron Configuration: [Ar] 4s 2 3d 10 4p 2; Word Origin: Latin Germania: Germany Properties: Germanium has a melting point of 937.4 C, boiling point of 2830 C, specific gravity of 5.323 (25 C), with valences of 2 and 4. Germanium Page One. Predicted by Mendeleev in 1870, germanium was actually found in 1886 by Winkler. Other compounds include: Germanium dichloride Ge Cl 2, Germanium dioxide GeO 2, Germanium tetrachloride GeCl 4 this is very irritating to eyes and membranes. Germanium is a lustrous hard metalloid element, belongs to group 14 of the periodic table. Classified as a metalloid, Germanium is a solid at room temperature. In the above, the most intense ion is set to 100% since this corresponds best to the output from a mass spectrometer. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all … : Number of neutrons + no. Germanium is a chemical element with Ge as its symbol. = 32. therefore, the no. Germanium was first located in a rare mineral called argyrodite. Element Germanium (Ge), Group 14, Atomic Number 32, p-block, Mass 72.630. It is less abundant than either tin or lead. of protons = mass number. It's an element that was predicted by Mendeleev in 1871. Common Uses Germanium fluoride (GeF 2) Germanium dioxide (GeO 2) Germanium hydride (Ge 2 H 6) Germanium tetrachloride (GeCl 4) Interesting facts: In its natural state it is brittle and crystalline. This is not to be confused with the relative percentage isotope abundances which totals 100% for all the naturally occurring isotopes. In pure form, the element is a grayish-white … Atomic number (number of protons in the nucleus): 32; Atomic symbol (on the periodic table of elements): Ge Thus, at room temperature in Ge (Si), one atom out of about 10 9 (10 12 ) contributes one electron-hole pair through breaking of covalent bond. Germanium Basic Facts . Properties, sources and uses of the element germanium. Germaine is a hazardous substance UN2192 which is classified as a poisonous gas (2.3). Isotopes are two or more forms of an element. Isotopes differ from each other according to their mass number. Stable 74 Ge is the most common isotope, having a natural abundance of approximately 36%. SO; in your question we have: mass no. It belongs to group 14 of the periodic table and its atomic number is 32. Isotope abundances of germanium. ››More information on molar mass and molecular weight. Germanium Menu. Overview of Germanium It is a gray-white metalloid. All atoms have a mass number which is derived as follows. 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