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1. Thulium: Thulium (chemical symbol Tm, atomic number 69) is the least abundant of the rare earth metals. It has a bright, silvery-gray luster. The element is never found in nature in pure form, but it is found in small quantities ... [100%] 2023-02-04
2. Thulium: Thulium is a chemical element, having the chemical symbol Tm. Its atomic number (the number of protons) is 69. [100%] 2023-02-04
3. Thulium: Thulium is a chemical element; it has symbol Tm and atomic number 69. It is the thirteenth and third-last element in the lanthanide series. (Chemical element with symbol Tm, atomic number 69) [100%] 2024-02-15 [Thulium] [Chemical elements]...
4. Thulium: Thulium is a chemical element with the symbol Tm and atomic number 69. It is the thirteenth and third-last element in the lanthanide series. (Chemistry) [100%] 2023-11-09 [Thulium] [Chemical elements]...
5. Thulium: Thulium is the rarest of the rare earth metals. [100%] 2023-02-05 [Elements] [Metals]...
6. Isotopes of thulium: Naturally occurring thulium (69Tm) is composed of one stable isotope, Tm (100% natural abundance). Thirty-four radioisotopes have been characterized, with the most stable being Tm with a half-life of 1.92 years, Tm with a half-life of ... (Physics) [77%] 2022-04-15 [Isotopes of thulium] [Thulium]...
7. Thulite: Thulite (sometimes called rosaline) is a translucent, crystalline or massive pink manganese-bearing variety of the mineral zoisite. Manganese substitutes for calcium in the structure with up to two percent Mn. (Chemistry) [71%] 2022-07-22 [Gemstones]
8. Thallium: Thallium is a chemical element, having the chemical symbol Tl. Its atomic number (the number of protons) is 81. [71%] 2023-01-22
9. Thorium: Thorium is a chemical element, having the chemical symbol Th. Its atomic number (the number of protons) is 90. [71%] 2023-11-13
10. Thorium: Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft and malleable and has a ... (Chemistry) [71%] 2023-11-13 [Thorium] [Chemical elements]...
11. Thallium: Thallium is a soft poisonous metallic element. Its physical properties are similar to those of lead. [71%] 2023-02-14 [Elements] [Metals]...
12. Thallium: Thallium (chemical symbol Tl, atomic number 81) is a soft, malleable metal. When freshly cut, it looks like tin, but it discolors to gray when exposed to air. This element and its compounds are highly toxic and need to be ... [71%] 2023-02-03
13. Thorium: Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft and malleable and has a ... [71%] 2023-01-11 [Thorium] [Chemical elements]...
14. Thallium: Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. (Chemistry) [71%] 2023-03-09 [Chemical elements] [Post-transition metals]...
15. Thorium: Thorium (chemical symbol Th, atomic number 90) is a naturally occurring, slightly radioactive metal and is a member of the actinide series. It can be used in magnesium alloys to impart strength, heat-resistant ceramics, gas tungsten arc welding electrodes ... [71%] 2023-02-04
16. Thallium: Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. [71%] 2022-09-07 [Thallium] [Chemical elements]...
17. Thesium (beetle): Thesium is a genus of ant-loving beetles in the family Staphylinidae. There are at least two described species in Thesium. (Beetle) [71%] 2024-01-08 [Pselaphinae]
18. Thallium: Template:Elementbox header Template:Elementbox series Template:Elementbox groupperiodblock Template:Elementbox appearance img Template:Elementbox atomicmass gpm Template:Elementbox econfig Template:Elementbox epershell Template:Elementbox section physicalprop Template:Elementbox phase Template:Elementbox density gpcm3nrt Template:Elementbox densityl. [71%] 2023-04-28 [Chemical elements] [Element toxicology]...
19. Thorium: Thorium is a radioactive, naturally occurring chemical element. The symbol for Thorium is Th and it has an atomic number of 90. [71%] 2023-02-10 [Metals]
20. Thallium: Le thallium, de symbole Tl, est l'élément chimique de numéro atomique 81. Il appartient au groupe 13 du tableau périodique ainsi qu'à la famille des métaux pauvres. [71%] 2025-03-04