Search results for "Synthetic radioisotope" - New World Encyclopedia
From New World Encyclopedia
- Neptunium (chemical symbol Np, atomic number 93) is a silvery radioactive metallic element, belonging to the actinide series. It is the first ...11 KB (1,451 words) - 16:21, 11 November 2022
- III) chloride is a catalyst in organic synthetic reactions. ... (88.48 percent natural abundance). The radioisotope 142Ce has a half-life ...15 KB (2,039 words) - 23:59, 3 December 2023
- Terbium (chemical symbol Tb, atomic number 65) is a silvery-white rare earth metal. The term "rare earth metals" (or "rare earth ...9 KB (1,141 words) - 03:47, 30 April 2023
- Promethium (chemical symbol Pm, atomic number 61) is a metallic element that is a member of the lanthanide series of chemical elements. All of ...11 KB (1,429 words) - 23:55, 1 December 2022
- Scandium (chemical symbol Sc, atomic number 21) is a soft, silvery-white metal. Scandium ore occurs in rare minerals from Scandinavia and elsewhere ...12 KB (1,615 words) - 17:06, 25 January 2023
- 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
- Argon (chemical symbol Ar, atomic number 18) is a member of the noble gas family of elements. It is present in the Earth's atmosphere at ...11 KB (1,517 words) - 06:25, 12 August 2023
- odor similar to that of ozone. In organic synthetic reactions, OsO4 is widely used to oxidize alkenes to the dialcohols. In addition, it is used ...14 KB (1,905 words) - 04:43, 18 November 2022
- Europium (chemical symbol Eu, atomic number 63) is the most reactive of the rare earth elements. The term "rare earth elements" (or ...10 KB (1,254 words) - 04:34, 23 March 2024
- 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
- Lutetium (chemical symbol Lu, atomic number 71) is a silvery white, metallic element that usually occurs in association with yttrium. It is the ...11 KB (1,371 words) - 03:06, 5 November 2022
- Category:Public number=54 | symbol=Xe | name=xenon | left=iodine | right=cesium | above=Kr | below=Rn | color1=#c0ffff | color2=green ...13 KB (1,905 words) - 14:16, 20 May 2023
- , once known as eka-lutetium, is a radioactive synthetic element in the periodic table. Its most stable isotope is 262Lr, with a half-life of approximately ...6 KB (798 words) - 17:58, 25 October 2022
- Polonium (chemical symbol Po, atomic number 84) is a rare, extremely toxic, and highly radioactive chemical element. It is found in small amounts ...11 KB (1,554 words) - 08:39, 24 November 2022
- Manganese (chemical symbol Mn, atomic number 25) is a gray-white metal that combines with other elements in various proportions. In nature, it ...14 KB (1,946 words) - 11:03, 9 March 2023
- Palladium (chemical symbol Pd, atomic number 46) is a rare, silver-white metal. It is a member of the platinum group of elements and resembles ...13 KB (1,749 words) - 06:25, 18 November 2022
- Cesium (also spelled caesium, chemical symbol Cs, atomic number 55) is a member of the group of chemical elements known as alkali metals. Soft ...14 KB (1,931 words) - 00:09, 4 December 2023
- Praseodymium Praseodymium is frequently misspelled as praseodynium. (chemical symbol Pr, atomic number 59) is a soft silvery metallic element ...12 KB (1,535 words) - 22:14, 30 November 2022
- addition, it has one extremely long-lived radioisotope, 96Zr, with an estimated half-life of more than 3.9x1020. The second most stable radioisotope is ...16 KB (2,114 words) - 06:08, 13 June 2023
- Ruthenium (chemical symbol Ru, atomic number 44) is a rare, hard, white metal. It is a member of the platinum group of elements and is found ...13 KB (1,814 words) - 18:24, 22 December 2022
