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GR8677 #41 |
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Problem
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Atomic }Binding Energy
Nickel and Iron are the most tightly bound nuclei, thus have the highest binding energy. Nickel isn't on the list, thus Iron must be the choice.
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Alternate Solutions |
Blake7
2007-07-23 17:44:43 | what if Iron wasn't on the list either?
I'm eyeballing a chart (Fig 13-3) in Anderson 'Intro to Modern' (p244) and it shows a curve with a rather flat, totally asymmetric peak of just under about 9MeV per at about A = 60 to 70, so to me that's from about Iron to Gemanium. (how am I to come up with 'the most abundant isotope'?)
Fortunately for us, Iron (C) is 'clearly' the only choice in this band. No doubt there's actually a relation defining this curve. (somewhere)
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Comments |
evanb
2008-06-19 18:54:31 | A and B can be ruled out, or stars wouldn't frequently create many of the elements we enjoy in abundance on Earth.
D and E can be ruled out, because the binding energy is so low that they decay spontaneously. |  | Blake7
2007-07-23 17:44:43 | what if Iron wasn't on the list either?
I'm eyeballing a chart (Fig 13-3) in Anderson 'Intro to Modern' (p244) and it shows a curve with a rather flat, totally asymmetric peak of just under about 9MeV per at about A = 60 to 70, so to me that's from about Iron to Gemanium. (how am I to come up with 'the most abundant isotope'?)
Fortunately for us, Iron (C) is 'clearly' the only choice in this band. No doubt there's actually a relation defining this curve. (somewhere)
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