Search results for "Thorium-232" - New World Encyclopedia
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- Thorium (chemical symbol Th, atomic number 90) is a naturally occurring, slightly radioactive metal and is a member of the actinide series. It ...14 KB (1,909 words) - 23:00, 30 April 2023
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- Thorium (chemical symbol Th, atomic number 90) is a naturally occurring, slightly radioactive metal and is a member of the actinide series. It ...14 KB (1,909 words) - 23:00, 30 April 2023
- Francium (chemical symbol Fr, atomic number 87) is a radioactive metal found in minute amounts in uranium and thorium ores. Although many isotopes ...6 KB (795 words) - 04:56, 9 April 2024
- Actinium (chemical symbol Ac, atomic number 89) is a silvery, radioactive, metallic element. Due to its intense radioactivity, it glows in the ...7 KB (911 words) - 05:39, 15 June 2023
- Protactinium (chemical symbol Pa, atomic number 91) is a member of the actinide series of chemical elements. It is a toxic, highly radioactive ...9 KB (1,150 words) - 08:16, 2 December 2022
- Zircon is a mineral belonging to a subgroup of silicate minerals called nesosilicates. Chemically, it is known as zirconium silicate, with the ...9 KB (1,181 words) - 06:08, 13 June 2023
- Jöns Jakob Berzelius (August 20, 1779 – August 7, 1848) was a Swedish chemist. Adversity in childhood fostered within Berzelius an independent ...9 KB (1,392 words) - 21:46, 4 October 2022
- Uraninite is a uranium-rich, radioactive mineral that is composed mainly of uranium dioxide (UO2). It is black or brownish and the principal ...4 KB (526 words) - 13:35, 3 May 2023
- Cerium (chemical symbol Ce, atomic number 58) is a silvery metallic element that is a member of the lanthanide series of chemical elements. It ...15 KB (2,039 words) - 23:59, 3 December 2023
- Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle. An alpha particle (or α particle, named after ...13 KB (1,992 words) - 08:22, 23 July 2023
- ===Thorium-232 series (4n+0)=== [[Image: Radser2.gif |thumb|center|450px|]] ===Uranium-238 series (4n+2)=== [[Image: Radser3.gif |thumb|center|450px|]] ...30 KB (4,559 words) - 22:46, 7 December 2022
- Hafnium (chemical symbol Hf, atomic number 72) is a lustrous, silvery gray metal. Chemically, it resembles zirconium and is found in zirconium ...10 KB (1,277 words) - 16:40, 21 January 2024
- dating. Uranium-233 is made from thorium-232 by neutron bombardment. The isotope uranium-235 or enriched uranium is important for both nuclear ...48 KB (6,867 words) - 15:33, 16 January 2024
- stable isotopes with more than 84 protons are thorium-232 and uranium-238. They form an "island of stability" that renders them stable enough ...11 KB (1,554 words) - 08:39, 24 November 2022
- Lanthanum (chemical symbol La, atomic number 57) is a soft, silvery white metallic element. Found in combination with other rare earth elements ...11 KB (1,398 words) - 22:23, 22 October 2022
- Radium (chemical symbol Ra, atomic number 88) is an extremely radioactive element that is classified as an an alkaline earth metal. When freshly ...13 KB (1,820 words) - 22:47, 7 December 2022
- uranium-238 (238U), uranium-235 (235U), and thorium-232 (232Th), respectively. The corresponding half-lives of these decay processes vary markedly: 4 ...18 KB (2,664 words) - 18:43, 25 October 2022
- *Thorium based reactors. It is possible to convert Thorium-232 into U-233 in reactors specially designed for the purpose. In this way, Thorium ...45 KB (6,704 words) - 00:40, 17 November 2022
- Astatine (chemical symbol At, atomic number 85) is the rarest naturally occurring chemical element. It is a member of the halogen family of elements ...6 KB (808 words) - 05:08, 18 August 2023
- Carbonatites are unusual igneous rocks that contain carbonate minerals at levels that exceed 20 percent (by volume). Their additional mineral ...7 KB (933 words) - 19:10, 26 November 2023
- Modern geologists and geophysicists consider the age of Earth to be around 4.54 billion years (4.54 9 years).1997. [http://pubs.usgs.gov/gip/geotime/age ...34 KB (5,149 words) - 06:44, 16 June 2023
