主要翻译 英语中文 thoriumn(chemical element)(化学元素)SCSimplified Chinese钍tǔ 在单词列表中:Elements in the periodic table,更多…… 标题中含有单词 'thorium' 的论坛讨论: 标题中没有含有单词 'thorium' 。 访问Chinese 论坛。 帮助WordReference:在论坛上提问。
ELEMENT 90 of the Periodic Table, thorium, ordinarily appears as the first element of the actinide series, appended below cerium at the bottom of Table 1. This construction gives the impression that thorium is the second member of a series starting with actinium in the scandium group, just as...
element of the actinide series. It is used for fuel in some nuclear reactors and for improving the high-temperature strength of magnesium alloys. The only naturally occurring isotope of thorium is also its most stable, having a half-life of 14 billion years.Atomic number90. SeePeriodic Table....
<a href="https://www.chemicool.com/elements/thorium.html">Thorium Element Facts</a> To cite this page in an academic document, please use the following MLA compliant citation: "Thorium." Chemicool Periodic Table. Chemicool.com. 18 Oct. 2012. Web.12/18/2024 <https://www.chemicool.com...
thorium (Th), radioactive chemical element of the actinoid series of the periodic table, atomic number 90; it is a useful nuclear reactor fuel. Thorium was discovered (1828) by Swedish chemist Jöns Jacob Berzelius. It is silvery white but turns gray or black on exposure to air. It is...
Description and origins of Cutout sheets, 20g, a sample of the element Thorium in the Periodic Table.
An example of the element ThoriumSample Image | Spin Video | QuickTimeVR Rotation Square rod. This glass-ampuled square rod of thorium was received in trade for the cut sheet listed in the previous sample description under thorium. It's permanently sealed in a glass ampule to prevent oxidation...
Discovered in the early 1800s, thorium is an element that is slightly radioactive. In this lesson, the pros and cons of using the element thorium for nuclear power are discussed. Introduction Energy is necessary within our society. It allows us to drive to work, get a coffee, and turn on...
The element has no known biological role. See also: actinides in the environment and Thorotrast Chemical thermodynamics of thorium, M. H. Rand See also * Periodic table * Nuclear reactor * Decay chain * Sylvania Electric Products explosion ...
thorium (Th), radioactivechemical elementof theactinoid seriesof theperiodic table,atomic number90; it is a usefulnuclear reactorfuel. Thorium was discovered (1828) by Swedish chemistJöns Jacob Berzelius. It is silvery white but turns gray or black on exposure to air. It is about half as...