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Tantalum - 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 video is about tantalum, an element not commonly heard of, but is in everyone's cell phone.

Chemists at the Los Alamos National Laboratory in the United States have developed a compound of tantalum that is one of the hardest materials ever synthesized. What is this "harder than diamond" tantalum compound?

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