Question

1. which of these elements would have the lowest ionization energy?

Explanation:

Ionization energy is the energy required to remove an electron from an atom. Generally, ionization energy decreases as the atomic radius increases and the out - most electrons are farther from the nucleus and less tightly held. Larger atoms with more electron shells tend to have lower ionization energies. If we assume the diagrams represent atoms with different numbers of electron shells, the atom with the most electron shells (largest atomic radius) will have the lowest ionization energy.

Answer:

A. Option A (assuming Option A represents the atom with the largest atomic radius among the given choices based on the electron - shell diagrams)