drag each tile to the correct box. arrange the elements in order of increasing atomic radius. use the…

Explanation:

Step1: Recall atomic - radius trends

Atomic radius decreases across a period and increases down a group in the periodic table.

Step2: Locate the elements

Fluorine (F) is in period 2, sulfur (S) is in period 3, magnesium (Mg) is in period 3, and barium (Ba) is in period 6.

Step3: Compare elements in the same period

In period 3, sulfur has a larger atomic radius than magnesium because sulfur has more electrons and electron - electron repulsion causes the outer electrons to spread out more.

Step4: Compare elements in different periods

Since F is in period 2, it has the smallest atomic radius among the four. Among Mg and S in period 3, Mg < S. And Ba in period 6 has the largest atomic radius.

Answer:

F, Mg, S, Ba