29 Facts About Uranium

Uranium is a chemical element with the symbol U and atomic number 92.

Uranium has the highest atomic weight of the primordially occurring elements.

Uranium-235 is the only naturally occurring fissile isotope, which makes it widely used in nuclear power plants and nuclear weapons.

Uranium-238 is fissionable by fast neutrons, and is fertile, meaning it can be transmuted to fissile plutonium-239 in a nuclear reactor.

Uranium is used as a colorant in uranium glass, producing lemon yellow to green colors.

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Uranium metal reacts with almost all non-metal elements and their compounds, with reactivity increasing with temperature.

Uranium-235 was the first isotope that was found to be fissile.

Uranium was used in photographic chemicals, in lamp filaments for stage lighting bulbs, to improve the appearance of dentures, and in the leather and wood industries for stains and dyes.

Uranium metal is used for X-ray targets in the making of high-energy X-rays.

Uranium determined that a form of invisible light or rays emitted by uranium had exposed the plate.

Uranium-236 was itself enriched by the decay of Pu, accounting for the observed higher-than-expected abundance of thorium and lower-than-expected abundance of uranium.

Uranium is a naturally occurring element that can be found in low levels within all rock, soil, and water.

Uranium is the 51st element in order of abundance in the Earth's crust.

Uranium is the highest-numbered element to be found naturally in significant quantities on Earth and is almost always found combined with other elements.

Uranium is more plentiful than antimony, tin, cadmium, mercury, or silver, and it is about as abundant as arsenic or molybdenum.

Uranium is found in hundreds of minerals, including uraninite, carnotite, autunite, uranophane, torbernite, and coffinite.

Uranium ore is mined in several ways: by open pit, underground, in-situ leaching, and borehole mining .

Uranium ore is crushed and rendered into a fine powder and then leached with either an acid or alkali.

Uranium content is usually referenced to O, which dates to the days of the Manhattan Project when O was used as an analytical chemistry reporting standard.

Uranium dioxide is the form in which uranium is most commonly used as a nuclear reactor fuel.

Uranium-238 is the most stable isotope of uranium, with a half-life of about 4.

Uranium-238 is usually an alpha emitter, decaying through the uranium series, which has 18 members, into lead-206, by a variety of different decay paths.

Uranium-234, which is a member of the uranium series, decays to lead-206 through a series of relatively short-lived isotopes.

Uranium-233 is made from thorium-232 by neutron bombardment, usually in a nuclear reactor, and U is fissile.

Uranium-235 is important for both nuclear reactors and nuclear weapons, because it is the only uranium isotope existing in nature on Earth in any significant amount that is fissile.

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Uranium-238 is not fissile, but is a fertile isotope, because after neutron activation it can be converted to plutonium-239, another fissile isotope.

Uranium is not absorbed through the skin, and alpha particles released by uranium cannot penetrate the skin.

Uranium metal is commonly handled with gloves as a sufficient precaution.

Uranium concentrate is handled and contained so as to ensure that people do not inhale or ingest it.