Question

describe generally how the trends in ionization energy and atomic radius apply to the noble gases, and explain the reason for these trends. noble gases have high ionization energy and small atomic radius due to full outer shells. noble gases have low ionization energy and large atomic radius due to full outer shells. noble gases have high ionization energy and large atomic radius due to incomplete outer shells. noble gases have low ionization energy and small atomic radius due to incomplete outer shells.

Explanation:

Noble gases have full outer - electron shells. This stable electron configuration makes it difficult to remove an electron (high ionization energy) and also results in a relatively small atomic radius as the electrons are held tightly around the nucleus.

Answer:

Noble gases have high ionization energy and small atomic radius due to full outer shells.