Final answer:
Argon (Ar) is larger in size compared to Neon (Ne)
Step-by-step explanation:
Both Neon (Ne) and Argon (Ar) are noble gases, which means they are both in the same group (Group 18) on the periodic table. As we move down a group on the periodic table, the size of the atoms increases. This is because each period (row) on the table adds an additional energy level, resulting in larger atomic radii. Therefore, since Argon is below Neon on the periodic table, Argon has a larger atomic size.
Learn more about atomic size