Q. The element which is commonly used in nuclear for producing electricity by nuclear fission is
Solution:
- Uranium-235 (235U) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a fission chain reaction. It is the only fissile isotope with a primordial nuclide found in significant quantity in nature.
- Uranium-235 has a half-life of 703.8 million years.
- It was discovered in 1935 by Arthur Jeffrey Dempster.
- Its fission cross section for slow thermal neutrons is about 584.994 barns. For fast neutrons it is on the order of 1 barn. Most but not all neutron absorptions result in fission; a minority result in neutron capture forming uranium-236.
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