Iodine is a chemical element in the periodic table that has the symbol I and atomic number 53.

Chemically, iodine is the least reactive of the halogens, and the most electropositive halogen after astatine.

Iodine is used in pharmaceuticals, antiseptics, medicine, food supplements, dyes, catalysts and photography.

It is required in trace amounts by most living organisms.It is required as a trace element for most living organisms.

Iodine deficiency gives rise to goiter.

For more information about the topic Iodine, read the full article at Wikipedia.org, or see the following related articles:

Halogen — The halogens are a chemical series. They are the elements in Group 17 (old-style: VII or VIIA) of the periodic table: fluorine (F), chlorine (Cl), ...  > read more

Tellurium — Tellurium is a chemical element in the periodic table that has the symbol Te and atomic number 52. A brittle silver-white metalloid which looks like ...  > read more

Actinide — The actinide series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table with atomic numbers 89 - 103. ...  > read more

Noble gas — The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence ...  > read more

Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.

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