Answer:
Rb > K > Na > Li
Explanation:
Ionization energy increases up the period and up the group.
From the periodic table, we can see that Li is the going to have the highest ionization energy and Rb is going to have the lowest.
Therefore, the correct answer is the first choice
Answer:
The minimum amount of energy required to remove the most loosely bound electron of an isolated neutral gaseous atom or molecule. Pls mark as breinlest