Uranium - Wikipedia
Uranium metal heated to 250 to 300 °C (482 to 572 °F) reacts with hydrogen to form uranium hydride. Even higher temperatures will reversibly remove the hydrogen. This property makes uranium hydrides convenient starting materials to create reactive uranium powder along with various uranium carbide, nitride, and halide compounds. [107]
Uranium | Definition, Properties, Uses, & Facts | Britannica
2024年12月6日 · Uranium, radioactive chemical element of the actinoid series of the periodic table, atomic number 92. It is an important nuclear fuel. It is a dense, hard metallic element that is silvery white in color. It is ductile, malleable, and capable of taking a high polish. Learn more about uranium in this article.
Uranium - Element information, properties and uses | Periodic Table
Extracted uranium is converted to the purified oxide, known as yellow-cake. Uranium metal can be prepared by reducing uranium halides with Group 1 or Group 2 metals, or by reducing uranium oxides with calcium or aluminium.
鈾 - 维基百科，自由的百科全书
鈾 （ yóu ） （英語： Uranium ），是一種化學元素，其化學符號为U，原子序數为92，原子量為 238.028 91 u ，属于锕系元素。 鈾是一種密度大的銀白色 重金屬 ，具有微 放射性 ，其 密度 比 鉛 高出大約70%，比 金 和 鎢 低。
Nuclear Fuel Facts: Uranium | Department of Energy
2015年3月1日 · Physical Properties of Uranium. Concentration - Uranium ranks 48th among the most abundant elements found in natural crustal rock. In the Earth’s crust, uranium is found as a mineral, bonded with other elements. Density - Uranium metal is very dense. At about 19 grams per cubic centimeter, it is 1.67 times more dense than lead.
Uranium | U (Element) - PubChem
Uranium metal exhibits in three crystallographic modifications: alpha > (688°C) > beta > (776°C) > gamma. Uranium is pyrophoric when finely divided. It is a little softer than steel and is attacked by cold water in a finely divided state.In air, uranium metal becomes coated with a layer of oxide.
Uranium - Simple English Wikipedia, the free encyclopedia
Uranium is a chemical element (a metal) on the periodic table. It has an atomic number of 92, which means that a uranium atom has 92 protons in its center, the nucleus. Uranium dug out of the ground is made from three different isotopes. The isotopes are different types of uranium with different numbers of neutrons in their nuclei.
FAST FACTS: What is uranium? - RAPPLER
3 天之前 · Uranium comes in more forms for other applications. When uranium is enriched with U-235, the process produces leftovers called depleted uranium (DU), which is a metal that has a reduced U-235 content.
What is Uranium? How Does it Work? - World Nuclear Association
Uranium is a heavy metal which has been used as an abundant source of concentrated energy for over 60 years. Uranium occurs in most rocks in concentrations of 2 to 4 parts per million and is as common in the Earth's crust as tin, tungsten and molybdenum.
Iran Accelerates Production of Near-Bomb-Grade Uranium, IAEA …
2024年12月6日 · The United Nations’ chief nuclear inspector said on Friday that Iran was quadrupling its production of near-bomb-grade material, a move likely to intensify the challenge it will pose to the ...