What is the Sign of Binding Energy for a Hydrogen-Like Atom?

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Homework Help Overview

The discussion revolves around the concept of binding energy in hydrogen-like atoms, specifically whether it is represented as a negative or positive value. Participants are exploring the definitions and implications of binding energy in the context of atomic physics.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the sign of binding energy, discussing whether it should be considered negative or positive based on its definition and implications for the stability of the system. There are attempts to clarify the relationship between binding energy and total energy.

Discussion Status

The discussion is ongoing, with participants providing clarifications and expressing varying interpretations of binding energy. Some guidance has been offered regarding the expression of binding energy, but no consensus has been reached.

Contextual Notes

There appears to be confusion stemming from different definitions and interpretations of binding energy, as well as the context in which it is discussed. Participants are navigating through these varying perspectives without a definitive resolution.

Krushnaraj Pandya
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Homework Statement


Is the binding energy for a hydrogen like atom equal to the total energy (negative) or the negative of the total energy (thus positive)?

2. The attempt at a solution
I found varying answers and definitions, some places said binding energy's the energy required to disassemble the system so it must be negative others said that to indicate that the system is bound it has to be negative. I decided I shouldn't get confused too much and just ask the experts on PF, Thank you :D
 
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Krushnaraj Pandya said:
the energy required to disassemble the system so it must be negative
Did you mean, so it must be positive?
 
haruspex said:
Did you mean, so it must be positive?
yes, sorry- I mistyped
 
Krushnaraj Pandya said:
yes, sorry- I mistyped
so for example is the BE of hydrogen 13.6 eV or -13.6 eV?
 
haruspex said:
Did you mean, so it must be positive?
Since you quoted that specifically, I'll assume BE is positive. Thank you very much for your help :D
 
Krushnaraj Pandya said:
Since you quoted that specifically, I'll assume BE is positive. Thank you very much for your help :D
I was just clarifying your question, but yes, from what I read, it is expressed as positive.
 
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Thank you :D
 

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