Environmental Chemistry
Environmental chemistry.com: Periodic Table Iodine
This is as helpful and detailed a reference as you'll likely find on iodine or any basic information relating to iodine. Highly recommended.
Encyclopedia of Earth
Encyclopedia of Earth: Iodine
Information about the element, Iodine, atomic number 53. Covers physical and atomic properties, how abundant it is on the Earth, permissible exposure limits, sources, uses, and potential substitutes.
Other
Mineralogy Database: Iodine
Basic chemical data on iodine along with a great list of iodine containing minerals (photos) with links to info on the minerals. Nice site.
Other
Web ref.org: Iodine
A good summary of iodine's properties and uses, in a very student-friendly format.
Web Elements
Web Elements Periodic Table: Iodine
A very nice WebElements site with all sorts of basic data on iodine, its chemical and physical properties, isotopes and uses.
University of Kentucky
Uk: Chemcomics: Iodine
Comic fraturing iodine. Not the most detailed information, but lots of fun. Interesting and useful for visuals.
Florida-Spectrum Environmental Services
Florida Spectrum: Chemical Fact Sheet: Iodine
This site provides a fact sheet with information on the basic data and properties of Iodine. It also includes some of its uses.
TED Talks
Ted: Ted Ed: Iodine: Periodic Table of Videos
The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about iodine, the pretty purple element, which is part of one of the professor's favorite chemical equations.
Other
Chemical Elements: Iodine
This site from Chemical Elements.com has great information on iodine. It lists the basic information and then provides the atomic structure in the form of a graph picture. A list of isotopes is also provided.
Chemicool
Chemicool: Iodine
This site from Chemicool by David D. Hsu is a very nice set of data tables summarizing just about all the important physical and chemical properties of iodine. This is a great site to check out on the subject.
Royal Society of Chemistry
Chemical Society: Iodine
Resource provides basic informatioin on iodine and its properties.
Other
Unicef: Iodine
A news release from UNICEF on the iodine deficiency problem in the world as well as some efforts to eradicate it.
Ducksters
Ducksters: Chemistry for Kids: Elements: Iodine
Find out about iodine's atomic weight, atom, uses, sources, name, and discovery on this website. Also learn about the properties and characteristics of iodine.