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thulium    
n. 稀土金属元素,符号Tm,铥原子序69

稀土金属元素,符号Tm,铥原子序69

thulium
n 1: a soft silvery metallic element of the rare earth group;
isotope 170 emits X-rays and is used in small portable
X-ray machines; it occurs in monazite and apatite and
xenotime [synonym: {thulium}, {Tm}, {atomic number 69}]

Thulium \Thu"li*um\, n. [NL. See {Thule}.] (Chem.)
A rare metallic element of the lanthanide group having atomic
number 69, and atomic weight 168.93. It is found in the
mineral gadolinite and other minerals, together with other
rare earths. For more information see the data from
ChemGlobe.
[1913 Webster PJC]


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  • Thulium - Wikipedia
    Despite its high price and rarity, thulium is used as a dopant in solid-state lasers It has no significant biological role and is not particularly toxic Artificial radioactive isotopes of thulium are used as radiation sources in some portable X-ray devices
  • Thulium - Element information, properties and uses | Periodic Table
    When irradiated in a nuclear reactor, thulium produces an isotope that emits x-rays A ‘button’ of this isotope is used to make a lightweight, portable x-ray machine for medical use Thulium is used in lasers with surgical applications Thulium has no known biological role It is non-toxic
  • Thulium | Rare Earth Element | Britannica
    thulium (Tm), chemical element, a rare-earth metal of the lanthanide series of the periodic table
  • Isotopes of thulium - Wikipedia
    Naturally occurring thulium (69 Tm) is composed of one stable isotope, 169 Tm, with 100% natural abundance
  • Thulium Facts, Symbol, Discovery, Properties, Uses
    Thulium is found in small quantities in monazite, a mineral that has approximately 20 parts per million (ppm) of the metal in the earth’s crust [1] It is then commercially extracted through ion-exchange and solvent-extraction processes [1]
  • Thulium Element Facts Chemistry - chemicool. com
    Thulium is a bright, soft, malleable, silvery-gray metal It is a rare earth metal and is one of the least abundant The metal tarnishes slowly in dry air to form the oxide and reacts with water to form the hydroxide and hydrogen gas Tm 3+ ions emit a strong blue luminescence when excited
  • Thulium - Learnool
    Thulium (Tm) is a chemical element of the periodic table, located in the period 6, and has the atomic number 69 It is the thirteenth element in the lanthanide series It is a bright, silvery-gray metal, whose name comes from “Thule”, the ancient name for Scandinavia
  • Thulium | Tm | CID 23961 - PubChem
    Thulium | Tm | CID 23961 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety hazards toxicity information, supplier lists, and more
  • Thulium: Rare Earth Element with Specialized Applications
    Discover the fascinating world of Thulium, a rare-earth element with the atomic number 69 Learn about its unique physical and chemical properties, its specialized industrial and medical applications, and its significance in modern technology
  • Thulium: Properties and Applications - stanfordmaterials. com
    Thulium is a rare, valuable metal with unique properties that make it useful in specialized applications, such as medical imaging, laser technology, and anti-counterfeiting





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