Elementary question of binding energy

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SUMMARY

The discussion centers on the relationship between the interacting energy (U) between two ions in a crystal and the binding energy (W) for one atom. It is established that W is not equal to U; rather, W is defined as W = -(1/2)U. This distinction is crucial for understanding the energy dynamics in ionic crystals. The sign convention is noted as a matter of choice, emphasizing the importance of clarity in definitions.

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  • Understanding of ionic crystal structures
  • Familiarity with concepts of binding energy in chemistry
  • Basic knowledge of energy interactions between particles
  • Awareness of sign conventions in physics and chemistry
NEXT STEPS
  • Research the concept of binding energy in ionic compounds
  • Study the derivation of energy interactions in crystal lattices
  • Explore the implications of sign conventions in thermodynamics
  • Examine case studies of ionic crystals and their binding energies
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Chemistry students, physicists, and researchers interested in the energy interactions of ionic crystals and binding energy concepts.

td21
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Hello! I asked this question in Physics section but no one replies so i think it is more a chem question.

When it is given that the interacting energy between 2 ions in a crystal is U, is the binding energy W(for 1 atom) equal to U?
i.e. U=W?

I think it's a reasonable guess;but i also look in some books that "W=-(1/2)U"? Why?and which one is correct? I cannot find anything on the internet, thanks for your help.

My chemistry background is also weak so thanks for your help.
 
Chemistry news on Phys.org
Interaction takes two ions, but you want energy per atom, yes?

Sign is just a matter of convention.
 

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