Based on their position in the periodic table, which of the following atoms would have the smallest ionization energy?

Question

Quizplus · Accepted Answer

Potassium (E) has the smallest ionization energy among the options given. This is because it is located in the first group of the periodic table (alkali metals) and has a larger atomic radius compared to the others listed. Elements with larger atomic radii and lower electronegativity typically have lower ionization energies, making it easier to remove an electron. Additionally, being further down in the group, potassium has more electron shells, which increases the distance between the nucleus and the valence electron, reducing the energy required to remove the electron.

Based on Their Position in the Periodic Table, Which of the Following