Petar Mali
Nov1-09, 04:14 AM
Litium has a structure
1s^22s^1
What is the first exited state of litium?
I have some doubt? I think that it is
1s^22p^1
Is it correct or maybe
1s^23p^1
Why I'm in problem. Because wave function of hydrogen atom depends of three quantum numbers
\psi_{n,l,m} but energy depends only of one quantum number E_n. So we have degeneration. In this logic it's need to be 1s^23p^1. But I don't have hydrogen I have litium, so must be some ecranisation and of course Hund rule s and p orbitals have different energy. And I can say that
E_{n,l}=-13,6eV\frac{1}{(n-\Delta l)^2}
Thanks for your answer!
1s^22s^1
What is the first exited state of litium?
I have some doubt? I think that it is
1s^22p^1
Is it correct or maybe
1s^23p^1
Why I'm in problem. Because wave function of hydrogen atom depends of three quantum numbers
\psi_{n,l,m} but energy depends only of one quantum number E_n. So we have degeneration. In this logic it's need to be 1s^23p^1. But I don't have hydrogen I have litium, so must be some ecranisation and of course Hund rule s and p orbitals have different energy. And I can say that
E_{n,l}=-13,6eV\frac{1}{(n-\Delta l)^2}
Thanks for your answer!