Answer:
Top right.
Explanation:
The Periodic Trend for Ionization Energy is up and to the right. Therefore, the highest ionization energy levels will be in the top right.
Noble gases like He and Ne would be examples of elements with extremely high ionization energy. Since their valence electron shells are full, they become core electrons and are stable. If you remove an electron, it would become unstable. Therefore, the element doesn't want to remove the electron, and would take a significant amount of joules to remove it.
