Question

Which of the elements listed below has the largest atomic radius?

1) ne
2) ar
3) kr
4) xe

Answer 1

Xenon (Xe) has the largest atomic radius among Ne, Ar, Kr, and Xe, following the periodic trend of increasing atomic size as one moves down a group.

Step-by-step explanation:

The element with the largest atomic radius among Ne (neon), Ar (argon), Kr (krypton), and Xe (xenon) is Xe (xenon). Atomic radius generally increases as we move down a group in the periodic table because new electron shells are added, making the atom larger. Since Xenon is located below Neon, Argon, and Krypton in Group 18 of the periodic table, it has more electron shells, resulting in a larger atomic radius. This pattern is consistent with the periodic trends that dictate atomic size.