Final answer:
c) Rubidium (Rb) has the largest atomic radius among the options given, due to its position at the bottom left in the periodic table, which indicates it has more energy levels and less nuclear charge effect.
Step-by-step explanation:
The element with the largest atomic radius among the options given (Lithium, Li; Xenon, Xe; Rubidium, Rb; Neon, Ne) is Rubidium (Rb).
Assessing atomic sizes on the periodic table, elements increase in size down a group because each subsequent element has another energy level, which is further from the nucleus and thus increases the atomic radius.
Also, as one moves from right to left across a period, the atomic radius increases since the nuclear charge has less of an impact due to fewer protons pulling the electrons inward.
Given these trends, since Rubidium is located at the bottom left of the listed elements in the periodic table, it has the largest atomic radius.
The atomic radius is the distance from the nucleus to the outermost electron shell in an atom.
The trend of atomic radius in the periodic table is that it generally decreases from left to right across a period and increases from top to bottom within a group.
Therefore, the element with the largest atomic radius is Rubidium (Rb), which is in Group 1 and located below Li.