Iodine (I) is used to seed clouds, detect and treat cancer, prevent infections, and protect people from radiation in the even of a nuclear accident. Most of the iodine found in nature is in seaweed. Pure iodine can also be obtained from natural brines. This book delves into the properties of the group 17 elements, also called the halogens, and the subatomic makeup of iodine. Readers discover the role of valence electrons, and the use of iodine in...