Respuesta :
Size of an atom,The effective nuclear charge,Shielding effect,Penetration effect and electronic configuration of an atom.
I'm not sure which of yours is correct but i hope this helps.
What are the factors that affect ionization energy
there are five factors which can affect the Ionization energy like size of an atom,The effective nuclear charge,Shielding effect,Penetration effect and electronic configuration of an atom.All these factors related to the number of electrones in the valence shell and between the valence shell and nucleus
there are five factors which can affect the Ionization energy like size of an atom,The effective nuclear charge,Shielding effect,Penetration effect and electronic configuration of an atom.All these factors related to the number of electrones in the valence shell and between the valence shell and nucleus