Curium Elemental Symbol
Curium



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Curium Curium Curio Cúrio Curio Curium

Curium Bohr ModelCurium is a Block P, Group 3, Period 7 element. The number of electrons in each of curium's shells is 2, 8, 18, 32, 25, 9, 2 and its electron configuration is [Rn] 5f7 6d1 7s2. The curium atom has a radius of 174.pm. In its elemental form, curium's CAS number is 7440-51-9. Curium is radioactive. It is produced by bombarding uranium or plutonium with neutrons in nuclear reactors. Curium is found in spent nuclear fuel and small amounts are produced for research. Curium was discovered by Glenn T. Seaborg, Ralph A. James and Albert Ghiorso at the University of California, Berkeley in 1944. The element was named in honor of Marie and Pierre Curie.

Curium 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
  • Research
  • Isotopes
  • Other Elements

Curium Properties


GENERAL PROPERTIES   PHYSICAL PROPERTIES  
Symbol: Cm Melting Point: 1345 oC, 2453 oF, 1618 K
Atomic Number: 96 Boiling Point: 3110 °C, 5630 °F, 3383 K
Atomic Weight: 247 Density: 13300 kg m-3
Element Category: Actinide Liquid Density @ Melting Point: N/A
Group, Period, Block: n/a, 7, f Specific Heat: N/A
    Heat of Vaporization N/A
CHEMICAL STRUCTURE Heat of Fusion 15 kJ·mol−1
Electrons: 96 Thermal Conductivity: N/A
Protons: 96 Thermal Expansion: N/A
Neutrons: 151 Electrical Resistivity: 1.25 µΩ·m
Electron Configuration: [Rn] 5f76d17s2 Electronegativity: 1.3 (Pauling scale)
Atomic Radius: 174 pm Tensile Strength: N/A
Covalent Radius: 169±3 pm Molar Heat Capacity: N/A
Van der Waals radius: N/A Young's Modulus: N/A
Oxidation States: 4, 3 (amphoteric oxide) Shear Modulus: N/A
Phase: Solid Bulk Modulus: N/A
Crystal Structure: hexagonal close-packed Poisson Ratio: N/A
Magnetic Ordering: antiferromagnetic (paramagnetic transition at 52 K) Mohs Hardness: N/A
1st Ionization Energy: 581 kJ·mol−1 (estimated) Vickers Hardness: N/A
2nd Ionization Energy: N/A Brinell Hardness: N/A
3rd Ionization Energy: N/A Speed of Sound: N/A
       
IDENTIFIERS   MISCELLANEOUS  
CAS Number: 7440-51-9 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22415 Abundance in typical human body, by atom: N/A
PubChem CID: 23979 Abundance in universe, by weight: N/A
MDL Number: N/A Abundance in universe, by atom: N/A
EC Number: N/A Discovered By: Glenn Seaborg, Ralph James, Albert Ghiorso
Beilstein Number: N/A Discovery Date: 1944
SMILES Identifier: [Cm]  
InChI Identifier: InChI=1S/Cm Other Names: Curio
InChI Key: NIWWFAAXEMMFMS-UHFFFAOYSA-N  
       
       
       
       
       


Recent Research & Development for Curium

  • Marcus Christl, Xiongxin Dai, Johannes Lachner, Sheila Kramer-Tremblay, Hans-Arno Synal, Low energy AMS of americium and curium, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 331, 15 July 2014
  • Masahide Takano, Hirokazu Hayashi, Kazuo Minato, Thermal expansion and self-irradiation damage in curium nitride lattice, Journal of Nuclear Materials, Volume 448, Issues 1–3, May 2014
  • Hang Yang, Yuancheng Teng, Xuetan Ren, Lang Wu, Haichang Liu, Shanlin Wang, Liuyang Xu, Synthesis and crystalline phase of monazite-type Ce1-xGdxPO4 solid solutions for immobilization of minor actinide curium, Journal of Nuclear Materials, Volume 444, Issues 1–3, January 2014
  • A.A. Povzner, A.N. Filanovich, V.A. Oskina, A thermodynamic model of thermal end elastic properties of curium, Journal of Nuclear Materials, Volume 443, Issues 1–3, November 2013
  • Hansa Devi, Gitanjali Pagare, Sunil Singh Chouhan, Sankar P. Sanyal, Structural, electronic, elastic and thermal properties for curium monopnictides: A first-principles study, Computational Materials Science, Volume 74, June 2013
  • Henry Moll, Gert Bernhard, A TRLFS study of curium(III) naphthalene and hydroxyquinoline complexes in aqueous solution, Polyhedron, Volume 31, Issue 1, 4 January 2012
  • Florent Lebreton, Damien Prieur, Aurélien Jankowiak, Magaly Tribet, Caroline Leorier, Thibaud Delahaye, Louis Donnet, Philippe Dehaudt, Fabrication and characterization of americium, neptunium and curium bearing MOX fuels obtained by powder metallurgy process, Journal of Nuclear Materials, Volume 420, Issues 1–3, January 2012
  • T. Fares, S. Peuget, O. Bouty, X. Deschanels, M. Magnin, C. Jégou, Helium diffusion in curium-doped borosilicate waste glass, Journal of Nuclear Materials, Volume 416, Issues 1–2, 1 September 2011
  • A. Singh, V. Srivastava, M. Aynyas, S.P. Sanyal, Pressure-induced phase transition and electronic structure of curium pnictides: Ab initio calculations, Journal of Nuclear Materials, Volume 401, Issues 1–3, June 2010
  • A. Osipenko, A. Maershin, V. Smolenski, A. Novoselova, M. Kormilitsyn, A. Bychkov, Electrochemistry of oxygen-free curium compounds in fused NaCl–2CsCl eutectic, Journal of Nuclear Materials, Volume 396, Issue 1, 1 January 2010
  • D. Rached, M. Rabah, R. Khenata, B. Abidri, S. Benalia, Structural phase transition and elastic properties of Curium and Uranium monobismuthides under pressure effect, Solid State Communications, Volume 149, Issues 41–42, November 2009
  • Anne Heller, Astrid Barkleit, Gert Bernhard, Jörg-Uwe Ackermann, Complexation study of europium(III) and curium(III) with urea in aqueous solution investigated by time-resolved laser-induced fluorescence spectroscopy, Inorganica Chimica Acta, Volume 362, Issue 4, 2 March 2009
  • M. Glorius, H. Moll, G. Bernhard, Complexation of curium(III) with hydroxamic acids investigated by time-resolved laser-induced fluorescence spectroscopy, Polyhedron, Volume 27, Issues 9–10, 26 June 2008
  • S. Heathman, R.G. Haire, T. Le Bihan, R. Ahuja, S. Li, W. Luo, B. Johansson, The unique high-pressure behavior of curium probed further using alloys, Journal of Alloys and Compounds, Volumes 444–445, 11 October 2007
  • T. Wiss, X. Deschanels, J.-P. Hiernaut, D. Roudil, S. Peuget, V.V. Rondinella, Helium release from plutonium and curium-doped zirconolite, Journal of Nuclear Materials, Volume 362, Issues 2–3, 31 May 2007
  • W. Haeck, E. Malambu, V.P. Sobolev, H. Aït Abderrahim, Assessment of americium and curium transmutation in magnesia based targets in different spectral zones of an experimental accelerator driven system, Journal of Nuclear Materials, Volume 352, Issues 1–3, 30 June 2006
  • Makoto Arisaka, Takaumi Kimura, Ryuji Nagaishi, Zenko Yoshida, Curium(III) species and the coordination states in concentrated LiCl-aqueous solutions studied by time-resolved laser-induced fluorescence spectroscopy, Journal of Alloys and Compounds, Volumes 408–412, 9 February 2006
  • Henry Moll, Gerhard Geipel, Gert Bernhard, Complexation of curium(III) by adenosine 5'-triphosphate (ATP): A time-resolved laser-induced fluorescence spectroscopy (TRLFS) study, Inorganica Chimica Acta, Volume 358, Issue 7, 15 April 2005
  • J.P. Hiernaut, C. Ronchi, Curium vaporization from (Cm,Pu)2O3 and from irradiated oxide fuel: Mass spectrometric measurement, Journal of Nuclear Materials, Volume 334, Issues 2–3, 1 September 2004
  • Thorsten Stumpf, Jan Tits, Clemens Walther, Erich Wieland, Thomas Fanghänel, Uptake of trivalent actinides (curium(III)) by hardened cement paste: a time-resolved laser fluorescence spectroscopy study, Journal of Colloid and Interface Science, Volume 276, Issue 1, 1 August 2004


Curium Isotopes


Curium is an artificial element. It has no stable isotopes.