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