Question

which of the following atoms would have the largest atomic radius? lithium sodium potassium cesium

Explanation:

Step1: Recall atomic - radius trend

Atomic radius increases down a group in the periodic table.

Step2: Locate elements in periodic table

Lithium (Li), Sodium (Na), Potassium (K), and Cesium (Cs) are all in Group 1 (alkali metals). Cs is the lowest - placed among them.

Answer:

Cesium