Uranium
Chemical Element
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Powers urge Iran to reconsider nuclear offer...who chaired the meeting. The International Atomic Energy Agency had brokered a plan under which Iran would send low-enriched uranium to Russia and France, but Tehran on Wednesday rejected the proposal. Under the initiative, Iran was... In this article: Iran, Tehran, Uranium, Mohamed ElBaradei, International Atomic Energy Agency, EU, U.N., Brussels, and Cancer |
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BBC News | 5 days ago
UN presses Iran on nuclear site
...community. Under a plan brokered by the IAEA and agreed by Russia, the US and France, Iran would send about 1,200kg (2,600lb), or 70%, of its low-enriched uranium, to Russia by the year's end for processing. Subsequently, France...
In this article: Iran, International Atomic Energy Agency, UN, Qom, Russia, US, Tehran, and BBC World
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AP Online | 4 days ago
Iran says UN watchdog has cleared nuclear program
...weapons-grade material. The U.S., Russia, China, Britain, France and Germany are seeking to persuade Iran to accept an uranium enrichment freeze under a plan of exporting Iran's uranium abroad in exchange for fuel. "That offer has been...
In this article: Iran, U.N., International Atomic Energy Agency, Benjamin Netanyahu, Barack Obama, and Qom
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Time 'running out' on Iran talks
Time 'running out' on Iran talks Russia and France would process uranium for Iran under the deal The leaders of the US and Russia have warned Iran that time is running out for talks over its nuclear programme. President Barack Obama said...
In this article: Iran, Dmitry Medvedev, Barack Obama, International Atomic Energy Agency, Russia, Tehran, UN, France, and Security Council
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washingtonpost.com | 3 days ago
Iran brushes aside UN nuclear deal
...would be returned to Iran. The amount of uranium that would be exported by Iran under the U.N. plan, about 1.2 tons (1,100 kilograms) of low-enriched uranium, represents about 70 percent of its stockpile. It would have been sent to...
In this article: Iran, United Nations, International Atomic Energy Agency, Tehran, United States, Hillary Clinton, Geneva, and State Department
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The News Tribune | 3 days ago
Iran dismisses U.N. deal to enrich uranium overseas
...rods, which would be returned to Iran. The amount of uranium that would be exported by Iran under the U.N. plan, about 1.2 tons of low-enriched uranium, represents about 70 percent of its stockpile. It would have been sent to Russia in one...
In this article: Iran, United Nations, Geneva, Tehran, International Atomic Energy Agency, State Department, and U.S.
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Pittsburgh Post-Gazette | 5 days ago
Nuclear Plant Built for Iran Is Delayed, Russia Says
...the 1979 revolution. Russia delivered its first shipment of enriched-uranium fuel rods to Bushehr in 2007, under an agreement that would require Iran to send the spent nuclear fuel back to Russia for disposal. At the time, Western...
In this article: Iran, Russia, Dmitri A. Medvedev, Moscow, Spent nuclear fuel, and Siemens
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NPR | 3 days ago
Iran Rejects U.N. Proposal To Export Uranium
...are aimed only at generating electricity. The amount of uranium that would be exported by Iran under the U.N. plan, about 1.2 tons, represents about 70 percent of its stockpile. It would have been sent to Russia in one batch by the...
In this article: Iran, United Nations, Hillary Clinton, Tehran, U.S., Russia, and France
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Description from Wikipedia:
Uranium (pronounced: /jʊˈreɪniəm/) is a silvery-gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and 146 neutrons, with 146 (U-238) and 143 in its most common isotopes. Uranium has the highest atomic weight of the naturally occurring elements. Uranium is approximately 70% more dense than lead, but not as dense as gold or tungsten. It is weakly radioactive. It occurs naturally in low concentrations (a few parts per million) in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite (see uranium mining).
In nature, uranium atoms exist as uranium-238 (99.284%), uranium-235 (0.711%), and a very small amount of uranium-234 (0.0058%). Uranium decays slowly by emitting an alpha particle. The half-life of uranium-238 is about 4.47 billion years and that of uranium-235 is 704 million years, making them useful in dating the age of the Earth (see uranium-thorium dating, uranium-lead dating and uranium-uranium dating).
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