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  • Isotopes of thorium - Wikipedia
    It was once named Radiothorium, due to its occurrence in the disintegration chain of thorium-232 It has a half-life of 1 9116 years It undergoes alpha decay to 224 Ra Occasionally it decays by the unusual route of cluster decay, emitting a nucleus of 20 O and producing stable 208 Pb
  • Radiothorium - definition of radiothorium by The Free Dictionary
    radiothorium - radioactive isotope of thorium with mass number 228 thorium-228 atomic number 90 , thorium , Th - a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
  • Radiothorium | chemical isotope | Britannica
    …radioactive substance, which he called radiothorium, was present Fired by this early success and encouraged by Ramsay, who thought highly of him, he decided to continue with research on radioactivity rather than go into industry
  • RADIOTHORIUM Definition Meaning - Merriam-Webster
    The meaning of RADIOTHORIUM is a radioactive isotope of thorium with the mass number 228
  • Isotopes: Soddy - Le Moyne
    Thus radiothorium, ionium, thorium, uranium- X1, and radioactinium are a group of isotopic elements, the calculated atomic masses of which vary from 228 to 234 They all occupy the same place in the periodic table, and are chemically indistinguishable
  • Radiothorium - Definition, Usage Quiz | Ultimate Lexicon
    Radiothorium is a radioactive isotope of thorium, specifically thorium-228 (Th-228) It occurs naturally as a decay product of uranium and thorium series and has applications in the field of radioactive research and nuclear medicine
  • What does radiothorium mean? - Definitions. net
    Meaning of radiothorium What does radiothorium mean? Information and translations of radiothorium in the most comprehensive dictionary definitions resource on the web
  • The origins of the conceptions of isotopes - NobelPrize. org
    It is the last member of the family of alkaline earths and stands in relation to thorium as thorium does to uranium in the periodic system But superimposed on this normal chemical character it possesses a radioactive character truly as-tounding
  • Radionuclide Basics: Thorium | US EPA
    Thorium is a naturally occurring radioactive metal found at trace levels in soil, rocks, plants and animals Thorium is used very little in industry, but can be found in heat-resistant alloys and paints and optical lenses
  • EPA Facts about Thorium
    Thorium is a naturally occurring radioactive metal that is found at low levels in soil, rocks, water, plants, and animals Almost all naturally occurring thorium exists in the form of either radioactive isotope thorium-232, thorium-230, and thorium-228 There are more than 10 other thorium isotopes that can be artificially produced





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