Astat 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.
Astat ist ein Block P, Gruppe 17, Periode 6 Element. Die elektronische Konfiguration [Xe] 4f14 5d10 6s2 6p5. In seiner elementaren Form Astat's CAS-Nummer ist 7440-68-8. Das Astat Atom hat einen Radius von 145.pm und es ist, Van der Waals Radius ist 200.pm.
Astat entdeckt wurde von Emilio Gino Segrè, Dale R. Corson und K. R. MacKenzie im Jahr 1940. Astat Abundance. The following table shows the abundance of
Astat and each of its naturally occurring isotopes on Earth along with the atomic mass for each isotope. |
astate
Astat
astato
Astato
Astato
AstatIsotope |
Atomic Mass |
% Abundance on Earth |
At-210 |
209.987131 |
- |
Astat Safety Data.
The safety data for Astat 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 Astat (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 |
- kJ mol-1 |
2nd Ionization Energy |
- kJ mol-1 |
3rd Ionization Energy |
- kJ mol-1 |
Conductivity. As to
Astat's electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @
20 ºC is 16.9 µOcm and its electronegativities (or its ability to draw electrons relative to other elements) is
2.1. The thermal conductivity of
Astat is 50.6 W m-1 K-1.
Thermal Properties of Astat. The melting point and boiling point for Astat are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization. |
Heat of Fusion |
23.81 kJ mol-1 |
Heat of Vaporization |
585.22 kJ mol-1 |
Heat of Atomization |
678 kJ mol-1 |
| Formula | Atomic Number | Molecular Weight | Electronegativity (Pauling) | Density | Melting Point | Boiling Point |
Vanderwaals radius |
Ionic radius | Energy of first ionization |
| Atd | 17 | (210) g.mol -1 | 2.2 | - g·cm−3 | 302 °C | 337 °C | .200 nm | - pm | - 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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