= 70. atomic no. Other compounds include: Germanium dichloride Ge Cl 2, Germanium dioxide GeO 2, Germanium tetrachloride GeCl 4 this is very irritating to eyes and membranes. 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. Germaine is a hazardous substance UN2192 which is classified as a poisonous gas (2.3). Overview of Germanium Germanium Menu. : Number of neutrons + no. Germanium is a chemical element with Ge as its symbol. The number of atoms/cm 2 in Ge or Si is of the the order of 10 22. Classified as a metalloid, Germanium is a solid at room temperature. 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 … ››More information on molar mass and molecular weight. 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 (32 Ge) has five naturally occurring isotopes, 70 Ge, 72 Ge, 73 Ge, 74 Ge, and 76 Ge. At room temperature (300 K), for Ge (Si) per cm 3 . Element Germanium (Ge), Group 14, Atomic Number 32, p-block, Mass 72.630. Germanium is a chemical element with symbol Ge and atomic number 32. Of these, 76 Ge is very slightly radioactive, decaying by double beta decay with a half-life of 1.78 × 10 21 years (130 billion times the age of the universe). Germanium is a lustrous hard metalloid element, belongs to group 14 of the periodic table. It is also a flammable gas (2.1). 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. It's an element that was predicted by Mendeleev in 1871. Germanium Basic Facts . However, today it is primarily obtained from the smelting of zinc ores and as a byproduct of burning certain types of coal. Germanium was first located in a rare mineral called argyrodite. Stable 74 Ge is the most common isotope, having a natural abundance of approximately 36%. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Isotopes are two or more forms of an element. Properties, sources and uses of the element germanium. of protons = mass number. It is less abundant than either tin or lead. = 32. therefore, the no. Atomic number (number of protons in the nucleus): 32; Atomic symbol (on the periodic table of elements): Ge Common Uses In pure form, the element is a grayish-white … Isotope abundances of germanium. In the above, the most intense ion is set to 100% since this corresponds best to the output from a mass spectrometer. It is a gray-white metalloid. All atoms have a mass number which is derived as follows. There are five naturally occurring isotopes of germanium: germanium-70, germanium-72, germanium-73, germanium-74, and germanium-76. Its ores are rare. SO; in your question we have: mass no. Just the facts. Predicted by Mendeleev in 1870, germanium was actually found in 1886 by Winkler. This is not to be confused with the relative percentage isotope abundances which totals 100% for all the naturally occurring isotopes. Isotopes differ from each other according to their mass number. It forms a large number of organometallic compounds. Germanium Page One. It belongs to group 14 of the periodic table and its atomic number is 32. 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