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Curium
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.

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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 electronic configuration is [Rn] 5f7 6d1 7s2. In its elemental form curium's CAS number is 7440-51-9. The curium atom has a radius of 174.pm and it's Van der Waals radius is 200.pm. Curium is radioactive.

Curium was discovered by Glenn T. Seaborg, Ralph A. James and Albert Ghiorso  in 1944. The element was named in honor of Marie and Pierre Curie.





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Curium Safety Data. The safety data for curium metal, nanoparticles and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the left margin. Curium compounds have no biological role.

Ionization Energy. The ionization energy for curium (the least required energy to release a single electron from the atom in it's ground state in the gas phase) is stated in the following table:
1st Ionization Energy 580.85 kJ mol-1
2nd Ionization Energy - kJ mol-1
3rd Ionization Energy - kJ mol-1


Conductivity. As to curium's electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ºC is - µOcm and its electronegativities (or its ability to draw electrons relative to other elements) is -. The thermal conductivity of curium is - W m-1 K-1.

Thermal Properties of Curium. The melting point and boiling point for curium are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization.
Heat of Fusion -kJ mol-1
Heat of Vaporization - kJ mol-1
Heat of Atomization 382 kJ mol-1


Recent Research & Development for Curium
  • Assessment of the radionuclide composition of "hot particles" sampled in the Chernobyl nuclear power plant fourth reactor unit. Bondarkov MD, Zheltonozhsky VA, Zheltonozhskaya MV, Kulich NV, Maksimenko AM, Farfán EB, Jannik GT, Marra JC. Health Phys. 2011 Oct;101(4):368-74. PMID: 21878762 [PubMed - indexed for MEDLINE]

  • Selective recognition of americium by peptide-based reagents. Özçubukçu S, Mandal K, Wegner S, Jensen MP, He C. Inorg Chem. 2011 Sep 5;50(17):7937-9. Epub 2011 Aug 5. PMID: 21819087 [PubMed - indexed for MEDLINE]

  • An emergency bioassay method for actinides in urine. Dai X, Kramer-Tremblay S. Health Phys. 2011 Aug;101(2):144-7. PMID: 21709501 [PubMed - indexed for MEDLINE]

  • Hydration shell structure and dynamics of curium(III) in aqueous solution: first principles and empirical studies. Atta-Fynn R, Bylaska EJ, Schenter GK, de Jong WA. J Phys Chem A. 2011 May 12;115(18):4665-77. Epub 2011 Apr 18. PMID: 21500828 [PubMed - indexed for MEDLINE]

  • Parent-reported attention-deficit hyperactivity disorder and subtypes of conduct disorder as risk factor of recidivism in detained male adolescents. Colins O, Vermeiren R, Vahl P, Markus M, Broekaert E, Doreleijers T. Eur Psychiatry. 2011 Mar 18. [Epub ahead of print] PMID: 21420836 [PubMed - as supplied by publisher]

  • Maternal characteristics predicting young girls' disruptive behavior. van der Molen E, Hipwell AE, Vermeiren R, Loeber R. J Clin Child Adolesc Psychol. 2011;40(2):179-90. PMID: 21391016 [PubMed - indexed for MEDLINE]

  • Psychiatric disorder in detained male adolescents as risk factor for serious recidivism. Colins O, Vermeiren R, Vahl P, Markus M, Broekaert E, Doreleijers T. Can J Psychiatry. 2011 Jan;56(1):44-50. PMID: 21324242 [PubMed - indexed for MEDLINE]

  • Sorption of curium by silica colloids: effect of humic acid. Kar AS, Kumar S, Tomar BS, Manchanda VK. J Hazard Mater. 2011 Feb 28;186(2-3):1961-5. Epub 2010 Dec 25. PMID: 21236572 [PubMed - indexed for MEDLINE]

  • Chemical speciation of trivalent actinides and lanthanides in biological fluids: the dominant in vitro binding form of curium(III) and europium(III) in human urine. Heller A, Barkleit A, Bernhard G. Chem Res Toxicol. 2011 Feb 18;24(2):193-203. Epub 2010 Dec 13. PMID: 21142120 [PubMed - indexed for MEDLINE]

  • The effect of temperature on the complexation of Cm(III) with nitrate in aqueous solutions. Rao L, Tian G. Dalton Trans. 2011 Jan 28;40(4):914-8. Epub 2010 Dec 6. PMID: 21135933 [PubMed]

  • 6-(3,5-Dimethyl-1H-pyrazol-1-yl)-2,2'-bipyridine as ligand for actinide(III)/lanthanide(III) separation. Girnt D, Roesky PW, Geist A, Ruff CM, Panak PJ, Denecke MA. Inorg Chem. 2010 Oct 18;49(20):9627-35. PMID: 20849125 [PubMed]

  • Determining the relative toxicity and RBE of internal emitters in animals. Priest ND, Hoel D. Health Phys. 2010 Sep;99(3):367-70. PMID: 20699699 [PubMed - indexed for MEDLINE]

  • The structure and bonding of Y, Eu, U, Am and Cm complexes as studied by quantum chemical methods and X-ray crystallography. Vallet V, Fischer A, Szabó Z, Grenthe I. Dalton Trans. 2010 Sep 7;39(33):7666-72. Epub 2010 Jul 15. PMID: 20631967 [PubMed]

  • Influence of geochemical parameters on the sorption and desorption behaviour of europium and gadolinium onto kaolinite. Kautenburger R, Beck HP. J Environ Monit. 2010 Jun;12(6):1295-301. Epub 2010 Mar 17. PMID: 20532382 [PubMed - indexed for MEDLINE]

  • Psychiatric disorders in detained male adolescents: a systematic literature review. Colins O, Vermeiren R, Vreugdenhil C, van den Brink W, Doreleijers T, Broekaert E. Can J Psychiatry. 2010 Apr;55(4):255-63. Review. PMID: 20416149 [PubMed - indexed for MEDLINE]

  • Relative toxicity of (45)Ca beta-particles and (242)Cm alpha-particles following their intravenous injection into mice as radiolabelled FAP. Priest ND, Hoel DG, Brooks PN. Int J Radiat Biol. 2010 Apr;86(4):300-20. PMID: 20353340 [PubMed - indexed for MEDLINE]

  • The relation of severity and comorbidity to treatment outcome with Cognitive Behavioral Therapy for childhood anxiety disorders. Liber JM, van Widenfelt BM, van der Leeden AJ, Goedhart AW, Utens EM, Treffers PD. J Abnorm Child Psychol. 2010 Jul;38(5):683-94. PMID: 20180011 [PubMed - indexed for MEDLINE]

  • Determining the radial pair distribution function from X-ray absorption spectra by use of the Landweber iteration method. Rossberg A, Funke H. J Synchrotron Radiat. 2010 Mar;17(2):280-8. Epub 2010 Jan 16. PMID: 20157284 [PubMed]

  • Spectroscopic identification of ternary Cm-carbonate surface complexes. Fernandes MM, Stumpf T, Baeyens B, Walther C, Bradbury MH. Environ Sci Technol. 2010 Feb 1;44(3):921-7. PMID: 20050656 [PubMed - indexed for MEDLINE]

  • 238U/235U variations in meteorites: extant 247Cm and implications for Pb-Pb dating. Brennecka GA, Weyer S, Wadhwa M, Janney PE, Zipfel J, Anbar AD. Science. 2010 Jan 22;327(5964):449-51. Epub 2009 Dec 31. Erratum in: Science. 2010 Mar 5;327(5970):1200. PMID: 20044543 [PubMed]
    •  
    Formula Atomic Number Molecular Weight Electronegativity (Pauling) Density Melting Point Boiling Point Vanderwaals radius Ionic radius Energy of first ionization
    Cm 96 247 g.mol -1 1.3 13.51 g/L 1345  °C 3110 °C .200 nm 174 pm 580.85 kJ.mol-1

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