"Electrons are negatively charged, therefore, two electrons repel each other. When electrons are paired in a 3p orbital there is electron pair repulsion which causes the energy of the electrons to increase. Increased energy makes the electron easier to remove and therefore the ionisation energy decreases."
I found this statement when studying ionisation energy. Is it correct to say that as electron energy increases, ionisation energy (EI) decreases? I understand the factors affecting EI (atomic radius, nuclear charge, shielding and electron pair repulsion) but have not seen this directly compared to electron energy before. Do each of the factors increase/decrease electron energy or is it irrelevant to think about it in that way?