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americium    
n. 镅

□

americium
n 1: a radioactive transuranic metallic element; discovered by
bombarding uranium with helium atoms [synonym: {americium},
{Am}, {atomic number 95}]

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  • Americium - Wikipedia
    Americium is a relatively soft radioactive metal with a silvery appearance Its most common isotopes are 241 Am and 243 Am In chemical compounds, americium usually assumes the oxidation state +3, especially in solutions
  • Americium | Radioactive, Synthetic, Transuranic | Britannica
    americium (Am), synthetic chemical element (atomic number 95) of the actinoid series of the periodic table
  • Americium (Am) Element: History, Properties, Uses, Hazards
    Although americium has no natural sources, it was most likely present at some point in the past when uranium concentrations in the area were sufficient to cause nuclear reactions Americium is a synthetic element formed from other elements such as plutonium It is frequently produced as a byproduct in nuclear power plants and nuclear weapons
  • Americium - Element information, properties and uses | Periodic Table
    Element Americium (Am), Group 20, Atomic Number 95, f-block, Mass [243] Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images
  • Americium | Public Health Statement | ATSDR
    What is americium? Americium (pronounced, am-ə'ris (h)-ē-əm) is a human-made, radioactive element There are no naturally occurring or stable isotopes of americium Pure americium is a silvery metal
  • Americium: Element Properties and Uses - samaterials. com
    Americium is a man-made radioactive element with unique chemical and physical traits that make it valuable in scientific research and industrial applications
  • Radionuclide Basics: Americium-241 - US EPA
    Americium (chemical symbol Am) is a man-made radioactive metal that is solid under normal conditions Americium is produced when plutonium absorbs neutrons in nuclear reactors or during nuclear weapons tests
  • Americium Element Facts - chemicool. com
    Americium is a silvery-white highly radioactive metal that has a density similar to lead It tarnishes slowly in dry air at room temperature Isotope 241 Am, the most common isotope, decays to 237 Np, emitting alpha and gamma radiation (1)
  • Americium | Am (Element) - PubChem
    Chemical element, Americium, information from authoritative sources Look up properties, history, uses, and more
  • Periodic Table of Elements: Los Alamos National Laboratory
    Americium was made by Glenn Seaborg, Ralph James, Leon Morgan, and Albert Ghiorso late in 1944 at the wartime metallurgical laboratory at the University of Chicago It was made as the result of successive neutron capture reactions by plutonium isotopes in a nuclear reactor





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