• Protactinium nitride is a binary inorganic compound of protactinium and nitrogen with the chemical formula PaN. The compound can be obtained from the...
    4 KB (309 words) - 20:01, 12 May 2024
  • Thumbnail for Protactinium
    Protactinium is a chemical element; it has symbol Pa and atomic number 91. It is a dense, radioactive, silvery-gray actinide metal which readily reacts...
    50 KB (5,824 words) - 02:54, 13 July 2024
  • Protactinium compounds are compounds containing the element protactinium (symbol: Pa). These compounds usually have protactinium in the +5 oxidation state...
    17 KB (1,760 words) - 20:03, 12 May 2024
  • Thumbnail for Boron
    sodium borate, and the ultra-hard crystals of boron carbide and boron nitride. Boron is synthesized entirely by cosmic ray spallation and supernovas...
    122 KB (13,026 words) - 08:36, 13 August 2024
  • Thumbnail for Cubic crystal system
    Wayback Machine Wang, L.D.; Kwok, H.S. (2000). "Cubic aluminum nitride and gallium nitride thin films prepared by pulsed laser deposition". Applied Surface...
    49 KB (3,620 words) - 04:18, 28 May 2024
  • Thumbnail for Gallium
    switching circuits, and infrared circuits. Semiconducting gallium nitride and indium gallium nitride produce blue and violet light-emitting diodes and diode lasers...
    74 KB (8,761 words) - 13:06, 13 August 2024
  • Thumbnail for Nitrogen
    (S4N4). The essentially covalent silicon nitride (Si3N4) and germanium nitride (Ge3N4) are also known: silicon nitride, in particular, would make a promising...
    105 KB (12,223 words) - 08:00, 14 August 2024
  • of protactinium. 233Pa has convenient half-life and energy of γ-radiation, and thus was used in most studies of protactinium chemistry. Protactinium-233...
    130 KB (11,602 words) - 15:30, 15 August 2024
  • to create reactive uranium powder along with various uranium carbide, nitride, and halide compounds. Two crystal modifications of uranium hydride exist:...
    13 KB (1,294 words) - 09:38, 19 June 2024
  • Thumbnail for Thorium compounds
    insoluble residue, probably ThO(OH, Cl)H is left behind, similarly to protactinium and uranium. Finely divided thorium metal presents a fire hazard due...
    35 KB (4,162 words) - 21:26, 28 April 2024
  • Thumbnail for Calcium
    alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most...
    47 KB (5,901 words) - 04:36, 20 August 2024
  • Thumbnail for Titanium
    burns in pure nitrogen gas, reacting at 800 °C (1,470 °F) to form titanium nitride, which causes embrittlement. Because of its high reactivity with oxygen...
    79 KB (8,788 words) - 08:10, 13 August 2024
  • Thumbnail for Niobium
    of niobium enhances the strength of the steel by scavenging carbide and nitride. The temperature stability of niobium-containing superalloys is important...
    83 KB (8,180 words) - 16:04, 18 August 2024
  • J. D. G.; Olsen, C. E.; White, R. W. (1965). "Superconductivity of Protactinium". Physical Review Letters. 15 (22): 860. Bibcode:1965PhRvL..15..860F...
    31 KB (2,163 words) - 05:14, 16 August 2024
  • PaBr4 protactinium(IV) bromide 13867–42–0 PaBr5 protactinium(V) bromide 15608–38–5 PaCl4 protactinium(IV) chloride 13867–41–9 PaCl5 protactinium(V) chloride...
    139 KB (120 words) - 17:07, 15 July 2024
  • Thumbnail for Phosphorus
    Phosphorus (section Nitrides)
    of crystalline phosphorus nitride decomposition at 1100 K. Similarly, H2PN is considered unstable, and phosphorus nitride halogens like F2PN, Cl2PN,...
    106 KB (12,394 words) - 22:14, 6 August 2024
  • Thumbnail for Uranium
    primarily undergo alpha decay, except for 229U and 231U, which decay to protactinium isotopes via positron emission and electron capture, respectively; the...
    110 KB (12,436 words) - 13:31, 13 August 2024
  • Thumbnail for Zirconium
    with the formula [Zr4(OH)12(H2O)16]Cl8. Zirconium carbide and zirconium nitride are refractory solids. Both are highly corrosion-resistant and find uses...
    47 KB (5,333 words) - 18:54, 17 August 2024
  • Thumbnail for Tantalum
    carbide, is a hard ceramic that is used in cutting tools. Tantalum(III) nitride is used as a thin film insulator in some microelectronic fabrication processes...
    53 KB (6,111 words) - 08:46, 14 August 2024
  • Thumbnail for Alkali metal
    be endothermic, so they do not form nitrides at standard conditions. Sodium nitride (Na3N) and potassium nitride (K3N), while existing, are extremely...
    214 KB (23,508 words) - 00:37, 13 August 2024
  • Thumbnail for Magnesium
    to put out fires; combustion continues in nitrogen (forming magnesium nitride), in carbon dioxide (forming magnesium oxide and carbon), and in water...
    77 KB (8,474 words) - 14:50, 11 August 2024
  • Thumbnail for Silicon
    when 1400 °C is reached, atmospheric nitrogen also reacts to give the nitrides SiN and Si 3N 4. Silicon reacts with gaseous sulfur at 600 °C and gaseous...
    86 KB (10,640 words) - 12:04, 13 August 2024
  • bromide – AlBr3 Aluminium carbide – Al4C3 Aluminium iodide – AlI3 Aluminium nitride – AlN Aluminium oxide – Al2O3 Aluminium phosphide – AlP Aluminium chloride...
    119 KB (8,734 words) - 09:23, 30 July 2024
  • Thumbnail for Radium
    oxygen) upon exposure to air, forming a black surface layer of radium nitride (Ra3N2). All isotopes of radium are radioactive, the most stable isotope...
    75 KB (8,164 words) - 02:32, 20 August 2024
  • Thumbnail for Aluminium
    with most nonmetals upon heating, forming compounds such as aluminium nitride (AlN), aluminium sulfide (Al2S3), and the aluminium halides (AlX3). It...
    135 KB (14,495 words) - 02:09, 15 August 2024
  • Thumbnail for Molybdenum
    the ammoxidation of propylene to acrylonitrile. Molybdenum carbides, nitride and phosphides can be used for hydrotreatment of rapeseed oil. Ammonium...
    73 KB (8,223 words) - 12:15, 13 August 2024
  • Thumbnail for Chromium
    nitrogen embrittlement, reacting with nitrogen from air and forming brittle nitrides at the high temperatures necessary to work the metal parts. Naturally occurring...
    109 KB (11,784 words) - 11:40, 13 August 2024
  • Thumbnail for Bromine
    resultant binary compounds are formally not bromides but rather oxides, nitrides, fluorides, or chlorides of bromine. (Nonetheless, nitrogen tribromide...
    67 KB (7,693 words) - 20:33, 10 August 2024
  • Boiling point Borane Borax Boric acid Bornite Boron Boron group Boron nitride Brass Bromine Brucite Buffer solution Bunsen burner Burette Burmite Butane...
    23 KB (1,949 words) - 12:24, 30 July 2024
  • Thumbnail for Selenium
    needed] Zinc selenide was the first material for blue LEDs, but gallium nitride dominates that market. Cadmium selenide was an important component in quantum...
    95 KB (11,044 words) - 22:05, 13 August 2024