• Hafnium is a chemical element; it has symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles...
    46 KB (5,394 words) - 10:16, 17 July 2024
  • Natural hafnium (72Hf) consists of five observationally stable isotopes (176Hf, 177Hf, 178Hf, 179Hf, and 180Hf) and one very long-lived radioisotope,...
    15 KB (713 words) - 03:15, 3 May 2024
  • Thumbnail for Hafnium carbide
    Hafnium carbide (HfC) is a chemical compound of hafnium and carbon. Previously the material was estimated to have a melting point of about 3,900 °C. More...
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  • hafnium controversy was a debate over the possibility of 'triggering' rapid energy releases, via gamma ray emission, from a nuclear isomer of hafnium...
    18 KB (2,372 words) - 20:48, 22 July 2024
  • Thumbnail for Group 4 element
    periodic table. It contains the four elements titanium (Ti), zirconium (Zr), hafnium (Hf), and rutherfordium (Rf). The group is also called the titanium group...
    35 KB (4,229 words) - 23:39, 26 April 2024
  • Hafnium carbonitride (HfCN) is an ultra-high temperature ceramic (UHTC) mixed anion compound composed of hafnium (Hf), carbon (C) and nitrogen (N). Ab...
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    a lustrous, grey-white, strong transition metal that closely resembles hafnium and, to a lesser extent, titanium. Zirconium forms a variety of inorganic...
    41 KB (4,828 words) - 15:21, 1 August 2024
  • Rutherfordium (redirect from Eka-Hafnium)
    experiments have confirmed that rutherfordium behaves as the heavier homolog to hafnium in group 4. The chemical properties of rutherfordium are characterized...
    48 KB (7,921 words) - 03:47, 3 July 2024
  • Hafnium (sometimes styled HAFNIUM; also called Silk Typhoon by Microsoft) is a cyber espionage group, sometimes known as an advanced persistent threat...
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  • Thumbnail for Hafnium(IV) oxide
    Hafnium(IV) oxide is the inorganic compound with the formula HfO 2. Also known as hafnium dioxide or hafnia, this colourless solid is one of the most...
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  • Thumbnail for Hafnium tetrachloride
    Hafnium(IV) chloride is the inorganic compound with the formula HfCl4. This colourless solid is the precursor to most hafnium organometallic compounds...
    13 KB (1,306 words) - 00:57, 23 September 2023
  • Thumbnail for Hafnium disulfide
    Hafnium disulfide is an inorganic compound of hafnium and sulfur. It is a layered dichalcogenide with the chemical formula is HfS2. A few atomic layers...
    4 KB (302 words) - 11:02, 10 July 2024
  • The hafnium nitrides are the various salts produced from combining hafnium and nitrogen. The two most important such are hafnium(III) nitride, HfN; and...
    5 KB (473 words) - 23:02, 9 May 2024
  • Tantalum hafnium carbide is a refractory chemical compound with a general formula TaxHfyCx+y, which can be considered as a solid solution of tantalum...
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  • Thumbnail for Hafnium diboride
    Hafnium diboride is a type of ceramic composed of hafnium and boron that belongs to the class of ultra-high temperature ceramics. It has a melting temperature...
    4 KB (314 words) - 19:07, 27 April 2024
  • Hafnium compounds are compounds containing the element hafnium (Hf). Due to the lanthanide contraction, the ionic radius of hafnium(IV) (0.78 ångström)...
    15 KB (1,823 words) - 05:55, 30 April 2024
  • physically capable of IGE fluorescence in safe arrangements: tantalum-180m and hafnium-178m2. Induced gamma emission is an example of interdisciplinary research...
    15 KB (1,973 words) - 15:15, 28 December 2023
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    compositions include chemical elements such as boron, cadmium, silver, hafnium, or indium, that are capable of absorbing many neutrons without themselves...
    20 KB (2,463 words) - 21:27, 5 June 2024
  • Hafnium phosphide (HfP) is a binary inorganic compound of hafnium metal and phosphorus. It can be obtained by heating together hafnium powder and red phosphorus...
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  • Thumbnail for Hafnium tetrafluoride
    Hafnium tetrafluoride is the inorganic compound with the formula HfF4. It is a white solid. It adopts the same structure as zirconium tetrafluoride, with...
    3 KB (209 words) - 16:57, 11 June 2023
  • Thumbnail for Neutron capture
    compounds such as molybdenum boride, hafnium diboride, titanium diboride, dysprosium titanate and gadolinium titanate. Hafnium absorbs neutrons avidly and it...
    8 KB (927 words) - 01:52, 13 July 2024
  • Thumbnail for Hafnium nitrate
    Hafnium(IV) nitrate is an inorganic compound, a salt of hafnium and nitric acid with the chemical formula Hf(NO3)4. Hafnium nitrate can be prepared by...
    4 KB (220 words) - 00:53, 23 September 2023
  • "Zirconium | Zr (Element) - PubChem". "Hafnium". Nielsen, Ralph H.; Updated by Staff (2013-04-19), "Hafnium and Hafnium Compounds", in John Wiley & Sons, Inc...
    16 KB (1,930 words) - 14:36, 9 July 2024
  • Materials which have received considerable attention are hafnium silicate, zirconium silicate, hafnium dioxide and zirconium dioxide, typically deposited using...
    12 KB (1,391 words) - 20:44, 30 July 2024
  • Hafnium silicate is the hafnium(IV) salt of silicic acid with the chemical formula of HfSiO4. Thin films of hafnium silicate and zirconium silicate grown...
    3 KB (266 words) - 20:14, 5 April 2024
  • Hafnium–tungsten dating is a geochronological radiometric dating method utilizing the radioactive decay system of hafnium-182 to tungsten-182. The half-life...
    18 KB (2,267 words) - 04:10, 7 April 2023
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    continental crust that now exists, which is supported by isotopic evidence from hafnium in zircons and neodymium in sedimentary rocks. The two models and the data...
    218 KB (19,277 words) - 09:32, 29 July 2024
  • Thumbnail for Nuclear isomer
    levels of excitation energy stored in each of the isomeric states (e.g., hafnium-178m2, or 178m2 72Hf ). A different kind of metastable nuclear state (isomer)...
    29 KB (3,457 words) - 09:15, 23 June 2024
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    named hafnium after Bohr's hometown of Copenhagen (Hafnia in Latin). Urbain's celtium proved to be simply purified lutetium (element 71). Hafnium and rhenium...
    252 KB (27,199 words) - 15:48, 3 August 2024
  • Thumbnail for Niels Bohr
    predicted the properties of a new zirconium-like element, which was named hafnium, after the Latin name for Copenhagen, where it was discovered. Later, the...
    104 KB (11,321 words) - 08:10, 3 August 2024