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Uranium is fairly easy to obtain, and the 235 isotope can be separated or increased, which is the fissile one. The only alternative is plutonium, and that has to be separated out from used uranium fuel. In some countries, but not the US, this has been done and a mixed uranium/plutonium fuel produced.

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15y ago
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13y ago

First of all, it is not Uranium, but a specific isotope of Uranium that is fissionable - Uranium-235. This isotope only makes up about 0.7% of the total uranium, so it has to be purified (or, as they say, "enriched") first, for use in a nuclear reactor or for a diabolical weapon.

Several isotopes are fissionable, meaning they can be used in nuclear reactors or in diabolical weapons. Apart from Uranium-235, there is also some isotope of plutonium that is appropriate for this purpose. However, Uranium-235 occurs naturally.

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15y ago

it's unstable because of its large relative Atomic Mass

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14y ago

The natural isotope 235U is fissionable with thermal neutrons; also fissile artificial isotopes with thermal neutrons are 233U, 239Pu, 241Pu.

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14y ago

Uranium 235 (fissile), uranium 238 (fertile)

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13y ago

Uranium is used as an important material for nuclear fission, not for the nuclear fusion.

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4y ago

Uranium wouldn't work in fusion only in fission

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Q: Why uranium is the best element in nuclear fusion?
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Related questions

What element is best suited for nuclear fission?

Plutonium, most likely, a man-made element, but mined Uranium will also do.


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Nuclear fusion is the phenomenon in which two lighter nuclei get fused to form heavier nucleus with the production of energy. Best example is SUN and hydrogen bomb. But nuclear fission of breaking heavier into lighter with the emission of energy. Example uranium-235. So atom bomb Nuclear fusion has clean energy but fission has hazard energy


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