Fluorine - 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 fluorine. A fluorine expert shows you this incredibly reactive element in action.
A different Periodic Video, Fluorine Gas found in nature (NEWS), explains to us how a mine in Germany contains CaF2 crystals that are not colorless (as they should be). If you break the crystals they produce, not only does it emit a terrible smell, they also contain tiny bubbles of fluorine gas (F2)!
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