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Isotopes of uranium - Wikipedia


Uranium (U) is a naturally occurring radioactive element that has no stable isotopes but two primordial isotopes that have long half-life and are found in ...

Radioactivity : Uranium Isotopes


Three isotopes, uranium 236, 233 and 232, are also produced by reactors from ... Uranium 233 is a fissile nucleus that does not exist naturally, such as ...

Radioactivity : Uranium 238 and 235


All isotopes of uranium are unstable and radioactive, but uranium 238 and ... Uranium reserves which exist under the oceans are about a thousand times more  ...

FAQ 1-What is uranium?


Uranium in its pure form is a silver-colored heavy metal that is nearly twice as dense as lead. In nature, uranium atoms exist as several isotopes: primarily ...

What is Uranium? How Does it Work - World Nuclear Association


Natural uranium as found in the Earth's crust is a mixture largely of two isotopes: uranium-238 (U-238), accounting for 99.3% and uranium-235 (U-235) about ...

What is the difference between uranium-235 and uranium-238 ...


Feb 8, 2013 ... Natural uranium contains 3 radioactive isotopes U-234 ,U-235,U-238 : 1. The weight percentage for U-235 is 0.72% and 0; 99.27% for U-238.

It's Elemental - The Element Uranium


Naturally occurring uranium consists of three isotopes: uranium-234, uranium- 235 and uranium-238. ... Methods also exist for concentrating uranium-235.

How can uranium exist in a number of different isotopes? - Quora


Jul 3, 2016 ... Almost every element exists as a mixture of isotopes. Elements are determined by the number of protons in the nucleus; so long as that is the ...

uranium-235 | chemical isotope | Britannica.com


The existence of uranium-235 in nature rests on the fact that alpha decay to the ground and low excited states exhibits hindrance factors of over 1,000. Thus the ...

Facts About Uranium - Live Science


Jul 9, 2015 ... This radioactive metal is unique in that one of its isotopes, uranium-235, is the only naturally occurring isotope capable of sustaining a nuclear ...