How many stable isotopes have 28 neutrons?

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SUMMARY

The discussion centers on identifying stable isotopes with 28 neutrons (N=28) in the context of Introductory Nuclear Physics. Participants suggest researching isotopes by varying the atomic number (Z) from below to above 28 and checking their stability. The exercise is criticized for its perceived simplicity and relevance, as one participant expresses disbelief that it was included in a previous exam.

PREREQUISITES
  • Understanding of nuclear physics concepts, specifically isotopes and neutron numbers.
  • Familiarity with the concept of magic numbers in nuclear stability.
  • Knowledge of how to research isotopes and their stability using scientific databases.
  • Basic skills in interpreting nuclear stability charts or tables.
NEXT STEPS
  • Research the concept of magic numbers in nuclear physics.
  • Learn how to use nuclear stability charts to identify stable isotopes.
  • Explore databases like the National Nuclear Data Center (NNDC) for isotope information.
  • Study the relationship between atomic number (Z) and neutron number (N) in isotopes.
USEFUL FOR

Students in nuclear physics courses, educators preparing exam materials, and researchers interested in nuclear stability and isotopic composition.

broegger
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Hi.

Can anybody help me with this exercise in Introductory Nuclear Physics:

One of the magic numbers for nuclei is 28. How many stable isotopes exist with N = 28. (N being the number of neutrons)

I have no idea on how to solve this.

Thanks.
 
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broegger said:
Hi.
Can anybody help me with this exercise in Introductory Nuclear Physics:
One of the magic numbers for nuclei is 28. How many stable isotopes exist with N = 28. (N being the number of neutrons)
I have no idea on how to solve this.
Thanks.
I think you are just supposed to look up various possibilities and see if they are stable.

Start with Z a low number <28 and go to Z a high number > 28 and look up the stable isotopes of each to see if the isotope with N=28 is stable.

AM
 
Ok, thanks. That's a pretty stupid exercise. I can't believe it was on last years exam.
 

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