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Arsenic - 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 arsenic -- element number 33 and is famous for the toxicity of its compounds.

As we can see in the Periodic Video “Arsenic Life”, in 2010 the scientific community were very excited about a new discovery that suggested some bacteria from Mono Lake in California could substitute phosphorus in their DNA with arsenic. It has since been shown to be untrue.

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