Who has the largest ionization energy between small non metals and large non metals?

Small nonmetals generally have larger ionization energies compared to larger nonmetals. This is because smaller atoms have their valence electrons closer to the nucleus, which leads to a stronger electrostatic attraction between the positively charged nucleus and the negatively charged electrons. As atomic size increases, the outer electrons are further away from the nucleus and less tightly held, resulting in lower ionization energies. Therefore, smaller nonmetals, like fluorine, have higher ionization energies than larger nonmetals, such as iodine.