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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 is a Block P, Group 3, Period 7 element. The 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 was discovered by Glenn T. Seaborg, Ralph A. James and Albert Ghiorso  in 1944.

 

 

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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.

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



 
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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Recent Research & Development for Curium



  • Comparative biokinetics of trivalent radionuclides with similar ionic dimensions: promethium-147, curium-242 and americium-241. Radiat Res. 2007 Sep;168(3):327-31.

  • Emergence of strong exchange interaction in the actinide series: the driving force for magnetic stabilization of curium. Phys Rev Lett. 2007 Jun 8;98(23):236402. Epub 2007 Jun 5.

  • Curium(III) complexation with pyoverdins secreted by a groundwater strain of Pseudomonas fluorescens. Biometals. 2007 Jul 25; [Epub ahead of print]

  • Complexation studies with lanthanides and humic acid analyzed by ultrafiltration and capillary electrophoresis-inductively coupled plasma mass spectrometry. J Chromatogr A. 2007 Aug 3;1159(1-2):75-80. Epub 2007 Mar 30.

  • Federal employees--random drug and alcohol testing--subject matter jurisdiction--issue preclusion--exhaustion. Whitman v. Department of Transportation. Benefits Q. 2007;23(1):52-3.

  • The curium aqua ion. Inorg Chem. 2007 Apr 30;46(9):3485-91. Epub 2007 Apr 4.

  • Fluctuating valence in a correlated solid and the anomalous properties of delta-plutonium. Nature. 2007 Mar 29;446(7135):513-6.

  • Quantification of actinide alpha-radiation damage in minerals and ceramics. Nature. 2007 Jan 11;445(7124):190-3.

  • The structures and optical spectra of hydrated transplutonium ions in the solid state and in solution. Angew Chem Int Ed Engl. 2007;46(6):919-22. No abstract available.

  • Relative toxicity of chronic irradiation by 45Ca beta particles and 242Cm alpha particles with respect to the production of lung tumors in CBA/Ca mice. Radiat Res. 2006 Nov;166(5):782-93.

  • Association of europium(III), americium(III), and curium(III) with cellulose, chitin, and chitosan. Environ Toxicol Chem. 2006 Aug;25(8):2051-8.

  • Speciation of the curium(III) ion in aqueous solution: a combined study by quantum chemistry and molecular dynamics simulation. Inorg Chem. 2006 Jul 10;45(14):5291-301.

  • Density functional theory studies of actinide(III) motexafins (An-Motex2+, An = Ac, Cm, Lr). Structure, stability, and comparison with lanthanide(III) motexafins. Inorg Chem. 2006 Apr 17;45(8):3444-51.

  • Almost twenty years' search of transuranium isotopes in effluents discharged to air from nuclear power plants with VVER reactors. Health Phys. 2006 Apr;90(4):328-36.

  • Online analysis of europium and gadolinium species complexed or uncomplexed with humic acid by capillary electrophoresis-inductively coupled plasma mass spectrometry. Anal Bioanal Chem. 2006 Mar;384(6):1416-22. Epub 2006 Feb 28.

  • A 244Cm irradiator for protracted exposure of cultured Mammalian cells with alpha particles. Health Phys. 2006 Jan;90(1):66-73.

  • A time-resolved laser fluorescence spectroscopy (TRLFS) study of the interaction of trivalent actinides (Cm(III)) with calcite. J Colloid Interface Sci. 2002 May 1;249(1):119-22.

  • Stabilities of the aqueous complexes Cm(CO3)33- and Am(CO3)33- in the temperature range 10-70 degrees C. Inorg Chem. 2005 Aug 8;44(16):5833-43.

  • A high-pressure structure in curium linked to magnetism. Science. 2005 Jul 1;309(5731):110-3.

  • EXAFS and time-resolved laser fluorescence spectroscopy (TRLFS) investigations of the structure of Cm(III)/Eu(III) complexed with di(chlorophenyl)dithiophosphinic acid and different synergistic agents. Dalton Trans. 2005 Apr 7;(7):1281-6. Epub 2005 Mar 1. Erratum in: Dalton Trans. 2005 May 21;(10):1865.

 

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