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berkelium
Berkelium Informationen, einschließlich Technische Daten, Safety Data und seine Eigenschaften, Forschung, Anwendungen und andere nützliche Fakten sind erörtert werden. Wissenschaftliche Fakten, wie die atomare Struktur, Ionisierungenergie, Fülle auf der Erde, Leitfähigkeit und thermischen Eigenschaften sind im Preis inbegriffen.

 

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Berkelium ist ein Block F, Gruppe 3, Periode 7 Element. Die elektronische Konfiguration [Rn] 5f9 7s2. In seiner elementaren Form Berkelium's CAS-Nummer ist 7440-40-6. Die Berkelium Atom hat einen Radius von 170.pm und es ist, Van der Waals Radius ist 200.pm.

Berkelium wurde von Stanley G. Thompson, Albert Ghiorso und Glenn T. Seaborg im Jahr 1949.

 

 

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Berkelium Safety Data. The safety data for berkelium 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.

Ionisation Energie. Die Ionisierungenergie für berkelium (die am wenigsten Energie benötigt, um ein einzelnes Elektron aus dem Atom in seinem Grundzustand in der Gasphase) ist in der folgenden Tabelle dargestellt:

1st Ionization Energy
601.11 kJ mol-1
2nd Ionization Energy
- kJ mol-1
3rd Ionization Energy
- kJ mol-1

Conductivity. As to berkelium'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 berkelium is - W m-1 K-1.

Thermal Properties of Berkelium. The melting point and boiling point for berkelium 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
291 kJ mol-1



 
Formula Atomic Number Molecular Weight Electronegativity (Pauling) Density Melting Point
Boiling Point
Vanderwaals radius
Ionic radius Energy of first ionization
Bk 97 247  g.mol -1 1.3 13 g/L 1050 °C - °C .200 nm 170 pm 601.11 kJ.mol-1

PRODUCT CATALOG German Operations Submicron & Nanopowder Tolling Ultra High Purity Sputtering Target Crystal Growth Rod, Plate, Powder, etc. Foil
 
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Recent Research & Development for Berkelium

  • [Absorption of 249Bk from the gastrointestinal tract of rats] Radiobiologiia. 1988 Nov-Dec;28(6):845-7. Russian.

  • The metabolism of plutonium and related elements. International Commission on Radiological Protection. A report of a Task Group of Committee 2. Ann ICRP. 1986;16(2-3):i-vi, 1-98. Review. No abstract available.

  • [Berkelium-249 metabolism in the body of animals] Radiobiologiia. 1984 Jan-Feb;24(1):122-5. Russian.

  • [The blastomogenic effect of 249Bk in rats] Eksp Onkol. 1984;6(3):36-8. Russian.

  • Fast neutron yields and spectra from targets of varying atomic number bombarded with deuterons from 16 to 50 MeV. Phys Med Biol. 1975 Mar;20(2):235-43.

  • Therapeutic removal of internally deposited transuranium elements. Health Phys. 1972 Jun;22(6):765-78. No abstract available.

  • Preliminary data on 253 Es and 249 Bk metabolism in rats. Health Phys. 1972 Jun;22(6):653-6. No abstract available.

  • Microscopic distribution of californium-249 and berkelium-249 in the soft tissues of beagles. Health Phys. 1972 Jun;22(6):691-3. No abstract available.

  • Determination of actinides in biological samples with bidentate organophosphorus extractant. Anal Chem. 1970 Aug;42(9):1073-6. No abstract available.

  • Health physics considerations in processing transplutonium elements. Health Phys. 1969 Apr;16(4):475-87. No abstract available.

 

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