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astatine    
n. 石厄

石厄

astatine
n 1: a highly unstable radioactive element (the heaviest of the
halogen series); a decay product of uranium and thorium
[synonym: {astatine}, {At}, {atomic number 85}]


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  • Astatine - Wikipedia
    It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements All of astatine's isotopes are short-lived; the most stable is astatine-210, with a half-life of 8 1 hours
  • Astatine Facts - The Rarest Natural Element
    Astatine (At) is a rare and highly radioactive element with atomic number 85 It is part of the halogen group (Group 17) in the periodic table, which also includes fluorine, chlorine, bromine, and iodine Unlike the other halogens, astatine has no stable isotopes
  • Astatine | Symbol, Atomic Number, Uses, Properties, Facts | Britannica
    Astatine is a radioactive chemical element and the heaviest member of the halogen elements, or Group 17 (VIIa) of the periodic table Because astatine has no stable or long-lived isotopes, it was given its name from the Greek word astatos, meaning “unstable ”
  • Astatine compounds - Wikipedia
    Astatine compounds Astatine compounds are compounds that contain the element astatine (At) As this element is very radioactive, few compounds have been studied Less reactive than iodine, astatine is the least reactive of the halogens [1]
  • Astatine - Element information, properties and uses | Periodic Table
    A mass spectrometer has been used to confirm that astatine behaves chemically like other halogens, particularly iodine Astatine has no known biological role It is toxic due to its radioactivity Astatine can be obtained in a variety of ways, but not in weighable amounts
  • Home - Astatine Investment Partners
    Astatine Investment Partners is a leading private equity firm focused on mid-market infrastructure investments and equipment leasing
  • Advances in the Chemistry of Astatine and Implications for the . . .
    In this Account, we give a concise summary of recent advances in the determination of the physicochemical properties of astatine, putting in perspective the duality of this element which exhibits the characteristics both of a halogen and of a metal
  • Energy Transition: Power, Heat, and Transport | Astatine
    Accelerate decarbonisation with Astatine's turnkey solutions Trusted by industry leaders for reducing energy costs carbon emissions efficiently
  • The rarest element on Earth could revolutionize cancer treatment
    Astatine is the rarest naturally occurring element on Earth and among the least explored in the periodic table True to its Greek name meaning "unstable," it exists only fleetingly in nature
  • New Understanding of Astatine’s Chemical Properties Will Aid Targeted . . .
    One isotope, astatine-211 (At-211, which has a 7 2-hour half-life), is among the most promising alpha emitters for cancer therapy In this research, scientists investigated and explained astatine’s behavior when interacting with ion exchange and extraction chromatography resins





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