[Spoon-]

Hey, I have to plot the first 36 elements' ionization energy on a graph and explain it's pattern. I know that it decreases as you go from top to bottom and it increases as you go left to right. But there are some exceptions that doesn't follow this pattern.

My question is, does the electron configuration have anything to do with these exceptions? Also, I know that a half filled sub-shell is more stable then a sub-shell that's almost fully filled...Why?

Thanks.
Spoon-

[FeLiXe]

the idea with a half filled subshell is that you have a rather high nuclear charge (which stabilises the electrons) but you don't have two electrons in the same orbital that would repel each other.

I don't have the ionisation energy pattern in my head. but maybe you could say what the exceptions are

[camherokid]

The pattern is correct,
From left to right:
 when more electron in the same subshell,
 the stronger at attraction, the smaller the radius, so the more energy to
 take to remove.

From top to bottom:
 The radius gets bigger, so the less energy to take to remove.

[ARGOS++]

Dear Spoon-;

Maybe this could be of help to you.

Good Luck!
                   ARGOS⁺⁺