- #1
jorgdv
- 29
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It's a basic matter that atoms almost filling their upper band release energy when they become a negative ion, equivalent to say that they have a positive electron affinity. But I don't understand why the ionized state is less energetic than the originial one in this kind of atoms; having the same effective charge, one could think that since the Coulomb potential doesn't change, and there are more electrons, the energy should increase after the process. And I know that in that state more orbitals are filled with pairs of electrons and it's more "stable", but how does it influence and how could you get to that conclusion?
Thanks in advance.
Thanks in advance.