Removing electrons from orbitals

[brood910]

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I know that you remove electrons from orbitals with higher n (higher shells).
But, I am wondering.. does the exception rule for I.E. apply to removing electrons as well?

For instance, even though IE increases across the periodic table from left to right, N actually has higher IE than O because the half-filled p orbital gets broken when an electron is removed. So, my question is, when I remove electrons, do I have to consider stability (higher IE) first bf considering which shell is higher?

 

[Patassa]

I know that you remove electrons from orbitals with higher n (higher shells).
But, I am wondering.. does the exception rule for I.E. apply to removing electrons as well?

For instance, even though IE increases across the periodic table from left to right, N actually has higher IE than O because the half-filled p orbital gets broken when an electron is removed. So, my question is, when I remove electrons, do I have to consider stability (higher IE) first bf considering which shell is higher?

So, like..
we know that for Cu, the configuration is 1s2 2s2 2p6 3s2 3p6 4s1 3d10.
Do we remove electrons from 4s first or 3d?

You're asking because the 4s is half full for Cu? But look, the 3d is actually full. So even if you wanted to use the IE exception rules instead of higher shell, you'd still pull from 4s first. So either way, you're good.