Difference between binding energy and ionization energy

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  • Thread starter Ado
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  • #1
Ado
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Main Question or Discussion Point

Hi!
I wonder since some time why ionization energies are not equal to binding energies.

For instance, take the case of aluminum in the following configuration [Ne]3s²3p

Ionization energy ~ 6 eV
Binding energy ~ 5 eV

Where does this difference come from ?

Thanks in advance
 

Answers and Replies

  • #2
DrClaude
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3,199
What is your source for these numbers (especially the binding energy)?
 

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