Final answer:
The most active nonmetals have small atomic radii and high ionization energies.
Step-by-step explanation:
The atoms of the most active nonmetals have small atomic radii and high ionization energies. Nonmetals are located on the right side of the periodic table and have a smaller atomic radius compared to metals. This is because nonmetals have more protons in their nucleus, resulting in a stronger attractive force on the outer electrons. Furthermore, nonmetals have high ionization energies, which means it requires a significant amount of energy to remove an electron from a nonmetal atom.
Learn more about Properties of nonmetals