Uranium Elemental Symbol
Uranium



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D'uranium Uran Uranio De urânio Uranio Uran

Uranium Bohr ModelUranium is a Block F, Group 3, Period 7 element. The number of electrons in each of Uranium's shells is 2, 8, 18, 32, 21, 9, 2 and its electron configuration is [Rn] 5f3 6d1 7s2. The uranium atom has a radius of 138.5.pm High Purity (99.999%) Uranium Oxide (UO) Powderand it's Van der Waals radius is 186.pm. In its elemental form, CAS 7440-61-1, uranium has a silvery gray metallic appearance. Uranium was discovered by Martin Heinrich Klaproth in 1789. It was first isolated by Eugène-Melchior Péligot in 1841. The name Uranium originates from the planet Uranus.

Uranium in its depleted and unenriched forms has numerous commercial applications due to its great density and its bright yellow-green color in glass and ceramics. Because of its great density it has found military applications in armor piercing armaments and in protective shielding. Uranyl Nitrate and Uranyl Acetate are used in medical and analytical laboratories. Uranium is harmful both through its radioactivity and chemical toxicity. Uranium information, including technical data, safety data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on earth, conductivity and thermal properties are included.


  • Properties
  • Safety Data
  • Products
  • Research
  • Isotopes
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Uranium Properties


GENERAL PROPERTIES   PHYSICAL PROPERTIES  
Symbol: U Melting Point: 1135 oC, 2075 oF, 1408.15 K
Atomic Number: 92 Boiling Point: 4131 oC, 7467.8 oF, 4404.15 K
Atomic Weight: 238 Density: 19050 kg m-3
Element Category: Actinide Liquid Density @ Melting Point: 17.3 g·cm−3
Group, Period, Block: n/a, 7, f Specific Heat: N/A
    Heat of Vaporization 417.1 kJ·mol−1
CHEMICAL STRUCTURE Heat of Fusion 9.14 kJ·mol−1
Electrons: 92 Thermal Conductivity: 27.5 W·m−1·K−1
Protons: 92 Thermal Expansion: (25 °C) 13.9 µm·m−1·K−1
Neutrons: 146 Electrical Resistivity: (0 °C) 0.280 µΩ·m
Electron Configuration: [Rn] 5f36d17s2 Electronegativity: 1.38 (Pauling scale)
Atomic Radius: 156 pm Tensile Strength: N/A
Covalent Radius: 196±7 pm Molar Heat Capacity: 27.665 J·mol−1·K−1
Van der Waals radius: 186 pm Young's Modulus: 208 GPa
Oxidation States: 6, 5, 4 Shear Modulus: 111 GPa
Phase: Solid  Bulk Modulus: 100 GPa
Crystal Structure: orthorhombic Poisson Ratio: 0.23
Magnetic Ordering: paramagnetic Mohs Hardness: N/A
1st Ionization Energy: 597.6 kJ·mol−1 Vickers Hardness: N/A
2nd Ionization Energy: 1420 kJ·mol−1 Brinell Hardness: N/A
3rd Ionization Energy: N/A Speed of Sound: (20 °C) 3155 m·s−1
       
IDENTIFIERS   MISCELLANEOUS  
CAS Number: 7440-61-1 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22425 Abundance in typical human body, by atom: N/A
PubChem CID: 23989 Abundance in universe, by weight: N/A
MDL Number: N/A Abundance in universe, by atom: N/A
EC Number: N/A Discovered By: Martin Heinrich Klaproth
Beilstein Number: N/A Discovery Date: 1789
SMILES Identifier: [U]  
InChI Identifier: InChI=1S/U Other Names: D'uranium, Uran, Uranio
InChI Key: JFALSRSLKYAFGM-UHFFFAOYSA-N  
       
       
       
       
       


Recent Research & Development for Uranium

  • Yinbin Miao, Benjamin Beeler, Chaitanya Deo, Michael I. Baskes, Maria A. Okuniewski, James F. Stubbins, Defect structures induced by high-energy displacement cascades in ? uranium, Journal of Nuclear Materials, Volume 456, January 2015
  • Haleem Ud Din, Sikander Azam, Saleem Ayaz Khan, R. Khenata, Optoelectronic behavior of Quaternary Uranium Chalcogenides Rb2Pd3UM6 (M = S, Se): A first principle study, Journal of Alloys and Compounds, Volume 615, 5 December 2014
  • Ludwik Dabrowski, Marcin Szuta, Diffusion of helium in the perfect and non perfect uranium dioxide crystals and their local structures, Journal of Alloys and Compounds, Volume 615, 5 December 2014
  • Yun Wang, Zexing Gu, Jijun Yang, Jiali Liao, Yuanyou Yang, Ning Liu, Jun Tang, Amidoxime-grafted multiwalled carbon nanotubes by plasma techniques for efficient removal of uranium(VI), Applied Surface Science, Volume 320, 30 November 2014
  • O.S. Valu, D. Staicu, O. Beneš, R.J.M. Konings, P. Lajarge, Heat capacity, thermal conductivity and thermal diffusivity of uranium–americium mixed oxides, Journal of Alloys and Compounds, Volume 614, 25 November 2014
  • J. Gou, C.H. Zhang, L.Q. Zhang, Y. Song, L.X. Wang, J.J. Li, Y.C. Meng, H.X. Li, Y.T. Yang, Z.W. Lu, The effects of high-energy uranium ion irradiation on Au/n-GaN Schottky diodes, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 339, 15 November 2014
  • M.W.D. Cooper, S.C. Middleburgh, R.W. Grimes, Vacancy mediated cation migration in uranium dioxide: The influence of cluster configuration, Solid State Ionics, Volume 266, 15 November 2014
  • Chinthaka M. Silva, Terrence B. Lindemer, Stewart R. Voit, Rodney D. Hunt, Theodore M. Besmann, Kurt A. Terrani, Lance L. Snead, Characteristics of uranium carbonitride microparticles synthesized using different reaction conditions, Journal of Nuclear Materials, Volume 454, Issues 1–3, November 2014
  • F.X. Zhang, M. Lang, C. Tracy, R.C. Ewing, D.J. Gregg, G.R. Lumpkin, Incorporation of uranium in pyrochlore oxides and pressure-induced phase transitions, Journal of Solid State Chemistry, Volume 219, November 2014
  • Mohammed Ameri, Slamani Amel, Boualem Abidri, Ibrahim Ameri, Y. Al-Douri, Bachir Bouhafs, Dinesh Varshney, Adjadj Aze-Eddine, Louahala Nadia, Structural, elastic, electronic and thermodynamic properties of uranium filled skutterudites UFe4P12: First principle method, Materials Science in Semiconductor Processing, Volume 27, November 2014

Uranium Isotopes


Uranium has two primordial isotopes with long half-lifes: 235U and 238U. Both of these are found in the earth's crust. It has no stable isotopes.