Question Detail
Question
The element with the *lowest* ionization energy is in the __________ corner of the periodic table (e.g., Fr).
Correct Answer
Option C is the correct answer.
Detailed Explanation
Francium (Fr), at the bottom of Group 1, has the largest atomic radius and greatest shielding, giving it the lowest first ionization energy.
Hint
Bottom left: large atoms, easy to ionize.