Atomic structure and determing effective nuclear charge

  • Thread starter joker314
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  • #1
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Homework Statement



The 3s state of Na has an energy of -5.14 eV. Determine the effective nuclear charge.

Homework Equations



Zeffective = Z - S (not listed in text book, found this online when trying to figure out the problem)

The Attempt at a Solution



Nothing in the text book in this section talk about determining nuclear charge. I know that Na is in the 2s[tex]^{2}[/tex]2p[tex]^{6}[/tex] group.
 

Answers and Replies

  • #2
olgranpappy
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For a hydrogenic atom, what is the expression for the energy-levels in terms of the principle quantum-number?
 
  • #3
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I believe that would be 1s
 
  • #4
olgranpappy
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I believe that would be 1s

no. you need an equation that relates energy "E" to the principle quantum number "n". Do you know an equation like that?
 
  • #5
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I do now... Even though I read that response too late. The grader of my homework gave me full credit anyways for a sub-par result.... But I appreciate the response because it let me on the right track after the fact!
 

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