Iodine

Fluorine, chlorine, bromine, iodine and astatine are halogens.

Mead and Bateson chose the upland village of Bajoeng Gede for their research, because a lack of iodine in the villagers' diet made them slow of speech.

Iodine is used to purify water.

The doctor painted Tom's throat with iodine.

Put some iodine on this cut.

In chemistry, "I" can mean both iodine and iodide.

Iodine is the name for the element with atomic number 53 and is represented by the symbol I. It is a member of the halogen group.

My drugstore only has iodine and bandages.

The iodine will do you good.

The study found evidence that iron deficiency can lower intelligence test scores by five to seven points, and a lack of iodine in pregnancy causes as many as 20 million babies a year to be born with mental retardation.