Answer: Of the following elements, Fluorine (F) has the highest ionization energy based on its location in the periodic table.
Explanation: ionization energy is the energy required to remove the outermost electron from an atom.
Ionization energy increases from left to right across a period and decreases from top to bottom in a group.
Fluorine is located at the top right corner of the periodic table, so it has the highest ionization energy.
Here is a table that I developed showing the ionization energies of the elements in question:
Element Ionization energy (kJ/mol)
Nitrogen (N) 1402
Rubidium (Rb) 403
Potassium (K) 496
Fluorine (F) 1681
As you can see, Fluorine has the highest ionization energy.
I hope this helps!