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Krypton - 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 krypton -- element number 36 in the periodic table and the fourth noble gas.

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Several years ago a professor at the University of Nottingham accidentally burnt a hole in the wall of his lab with a krypton-fluoride laser. These lasers radiate energy near the ultraviolet portion of the spectrum. What is the wavelength that a Kr-F laser radiates at?

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