What Is Iodine Made Of?

What Is Iodine Made Of?

Iodine is an element and, therefore, it is not strictly "made" of anything but iodine atoms, according to Jefferson Lab. Iodine is a solid at room temperature and occupies position 53 on the periodic table. It is classed as a member of the halogen group.

As its atomic number indicates, iodine atoms possess 53 protons that are surrounded by a shell of 53 electrons. These particles are kept stable by a number of neutrons that varies with the specific isotope. Though trace amounts of iodine are needed by the human body, pure iodine is poisonous and should be handled with caution.