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Iodine - Periodic Table of Videos

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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.

In an area near Nottingham, why did several people suffer "Derbyshire Neck," caused by a lack of iodine (before this element was added to table salt)?

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