Rank the elements Ca, As, K, Br from highest to lowest first ionization energy. (Type your answer using the format W>X>Y>Z.)

Question

Would the answer be: K>Ca>As>B

Answer 1

Let's compare K with Ca.
K has 19+ charges and 1 outside electron.
Ca has 20+ charges and 2 outside electrons. So it should be harder to pull an electron from Ca than K and first IP should be higher for Ca than K. right?