Question

which of the following halogens has the largest atomic radius? a fluorine b chlorine c bromine d iodine

Explanation:

Atomic radius increases down a group in the periodic table. Fluorine, chlorine, bromine, and iodine are in the halogen group (Group 17), and iodine is the lowest - placed among them in the group. So iodine has the largest number of electron shells among these halogens, resulting in the largest atomic radius.

Answer:

d. Iodine