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Manganese - 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 manganese -- element number 25 and a metal with a very rich chemistry.

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After a couple of fails, the professor stumbles over a "magical" reaction involving hydrogen peroxide and potassium permanganate
Stephen Church and Manganese Pentacarbonyl.
For everything you didn't know you wanted to know about manganese, check out The Elements by Theodore Gray.
For all the basics about manganese, check out the Visual Elements Periodic Table.
Black manganese dioxide pigments have been found in cave paintings dating from up to 30,000 years ago! Manganese compounds were later used by Egyptian and Roman glassmakers. This practice continued through the Middle Ages until modern times.
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