Incredible Iodine Interesting Facts Ideas. Iodine is an essential component of the thyroid hormones thyroxine (t4) and triiodothyronine (t3). Although it is a nonmetallic element, it often has a metallic sheen.
Iodine is the 47th most abundant element in the solar system. A deficiency of iodine can therefore prevent normal growth and development. Web iodine is element 53 on the periodic table, with element symbol i.
