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Lithium - 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 lithium, the lightest of the alkali metals.

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Pete showed us a very dark piece of lithium, but when he cut it we saw a metallic luster. The corrosion of lithium by contact with the air is responsible, but which material makes the surface of lithium appear black?

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