Final answer:
The first ionization energy is higher for the elements closer to the top right corner of the periodic table. Fluorine (F) has the highest first ionization energy.
Step-by-step explanation:
The first ionization energy is the energy required to remove one electron from an atom in its gaseous state. It represents how tightly an electron is held by the atom. The trend in ionization energy across a period from left to right generally increases, and down a group from top to bottom generally decreases.
Comparing the given elements, the first ionization energy of an atom would be higher for the elements closer to the top right corner of the periodic table. Among the options given, the highest first ionization energy would be for Fluorine (F).