Which of the following elements has the smallest first ionization energy
A) Cl
B) Na
C) Be
D) K
E) As

Name: Which of the following elements has the smallest first ionization energy A) Cl B) Na C) Be D) K E) As
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Question

Quizplus · Accepted Answer

Potassium (K) has the smallest first ionization energy because it is located further down and to the left on the periodic table compared to the other elements listed, meaning it has a larger atomic radius and its outer electron is more easily removed.

Which of the Following Elements Has the Smallest First Ionization