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astatine

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Astatine | At (Element) - PubChem
Astatine is a chemical element with symbol At and atomic number 85 . Classified as a halogen, Astatine is a solid at 25°C (room temperature). pubchem.ncbi.nlm.nih.gov
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Astatine - Wikipedia
Astatine is a chemical element; it has symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust. en.wikipedia.org
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Astatine Element | Properties, Uses & Effects - Lesson - Study.com
Astatine is a nonmetal halogen with an unknown appearance. It is speculated that astatine would be a black lustrous solid at room temperature. study.com
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astatine
astatine Chem. (ˈæstətɪn, -iːn) [f. Gr. ἄστατ-ος unstable (see astasia) + -ine5.] A radioactive element of short half-life, which is rare in nature but can be made artificially; the heaviest element of the halogen group. (Formerly called alabamine and anglo-helvetium.) Symbol At, atomic number 85, p... Oxford English Dictionary
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Astatine - Element information, properties and uses | Periodic Table
Astatine is the least reactive of the halogens but just like the rest of them it combines with hydrogen to make hydrogen astatide which dissolves in water to ... periodic-table.rsc.org
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Astatine | Radioactive Halogen, Uses in Medicine & Research
Astatine (At), radioactive chemical element and the heaviest member of the halogen elements, or Group 17 (VIIa) of the periodic table. www.britannica.com
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Astatine (At) - Chemical properties, Health and Environmental effects
Astatine is a highly radioactive element and it is the heaviest known halogen. Its chemical properties are believed to be similar to those of iodine. www.lenntech.com
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Astatine - Simple English Wikipedia, the free encyclopedia
Astatine is a radioactive, chemical element. Its atomic number is 85, and its atomic weight is 210. It is part of the Group 17 (halogens) on the periodic table ... simple.wikipedia.org
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Astatine : The Element of Atomic Number 85 - Nature
In 1940, we prepared the isotope of mass 211 of element 85 by bombarding bismuth with alpha particles accelerated in the 60-in. cyclotron of the Radiation ... www.nature.com
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New Understanding of Astatine's Chemical Properties Will Aid ...
Researchers gain new insights into how the isotope astatine-211 interacts with resins commonly used to purify the isotope for therapeutic ... www.energy.gov
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Facts About Astatine | Live Science
Atomic symbol (on the periodic table of elements): At. Atomic weight (average mass of the atom): 210. Density: approximately 4 ounces per cubic inch (approximately 7 grams per cubic cm) Phase at ...
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astatine
astatine/ˈæstəti:n; `æstəˌtin/ n[U](chemistry 化) artificial radioactive element （人工放射性元素）. =>App 10 见附录10. 牛津英汉双解词典
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Astatine bromide
Production Astatine bromide is produced by the reaction of astatine with an aqueous solution of iodine monobromide: At2 + 2 IBr → 2 AtBr + I2 Astatine Astatine compounds Bromides wikipedia.org
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Astatine iodide
Astatine iodide is an interhalogen compound with the chemical formula AtI. Production Astatine iodide is produced by the direct combination of astatine and iodine in a 1:1 molar ratio: At2 + I2 → 2 AtI References Bibliography wikipedia.org
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alabamine
alabamine (Disused.) (æləˈbæmɪn) [f. Alabama, name of a State in U.S.A. + -ine5.] The name originally proposed for astatine. Cf. also anglo-helvetium.1932 F. Allison et al. in Jrnl. Amer. Chem. Soc. LIV. 616 We suggest the name Alabamine and symbol Am for element 85. 1936 Nature 13 June 969/2 The pr... Oxford English Dictionary
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