Astatine 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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Astatine Abundance. The following table shows the abundance of Astatine and each of its naturally occurring isotopes on Earth along with the atomic mass for each isotope.
Astatine Safety Data. The safety data for Astatine 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. Asatinecompounds have no biological role. Ionization Energy. The ionization energy for Astatine (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:
Conductivity. As to Astatine‘s electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ?C is 16.9 ?Ocm and its electronegativities (or its ability to draw electrons relative to other elements) is 2.1. The thermal conductivity of Astatine is 50.6 W m-1 K-1. Thermal Properties of Astatine. The melting point and boiling point for Astatine are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization.
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Formula | Atomic Number | Molecular Weight | Electronegativity (Pauling) | Density | Melting Point | Boiling Point | Vanderwaals radius | Ionic radius | Energy of first ionization |
At | 17 | (210) g.mol -1 | 2.2 | -?g·cm?3 | 302? °C | 337? °C | .200 nm | - pm | - kJ.mol-1 |