Does U-235's Higher Likelihood of Fission Make It More Useful Than U-238?

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SUMMARY

U-235 is more useful than U-238 for nuclear fission due to its higher likelihood of undergoing fission when bombarded by slow neutrons, resulting in the formation of U-236. This process leads to a more stable nucleus, making U-235 a preferred choice in nuclear reactors. In contrast, U-238 is classified as fertile and does not undergo fission as readily, highlighting the distinct roles these isotopes play in nuclear applications.

PREREQUISITES
  • Understanding of nuclear fission and its mechanisms
  • Knowledge of isotopes and their classifications (fissile vs. fertile)
  • Familiarity with neutron bombardment processes
  • Basic principles of atomic structure and electron shell configuration
NEXT STEPS
  • Research the characteristics of fissile isotopes, focusing on U-235
  • Study the neutron bombardment process and its effects on isotopes
  • Learn about the applications of U-238 in breeding fissile material
  • Explore the differences in nuclear reactor designs utilizing U-235 and U-238
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Nuclear physicists, nuclear engineers, and students studying nuclear chemistry or reactor design will benefit from this discussion.

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U-235 is most suitable for bombardment by slow neutrons 'cause it becomes U-236,providing for a more balanced nucleus. So if the electron shells are arranged something like 2,4,8,16,32,18,8,2 the atomic number only changes, in this case, because of an additional neutron. Is this element in a more harmonic state now, is this why it is useful? and U-238; would the same be true simply because it has an even atomic number after bombardment? "Anddoes U-238 have the same electron numbers in their respective shells?
L8R
 
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Please show some work and attempt to answer one's questions.

What is common among isotopes of any element?

U-235 is one of the fissile or fissionable isotopes, whereas U-238 is considered fertile.
 

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