Question

1. which element would have the largest radius?

Explanation:

Step1: Recall atomic - radius trend

Atomic radius increases down a group and decreases across a period.

Step2: Analyze the elements in the options (assuming options are from the table elements)

The element in the lowest - numbered group and the lowest period among the given choices will have the largest radius. Looking at the periodic table, elements towards the bottom - left have larger radii. For example, if we consider common elements from the table, Cs (cesium) or Fr (francium) would be large. But from the elements shown in the table, Sr (strontium) is in a lower period compared to many of the other highlighted elements and is in Group 2.

Answer:

Sr (Strontium)