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Thallium - 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. Poisonous thallium is element number 81 and its chemical symbol is Tl.


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Additional Resources for you to Explore
For all the basics about thallium, check out the Visual Elements Periodic Table.
For amazing photos and facts about thallium, check out The Elements by Theodore Gray.
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Agatha Christie’s 1961 detective story, “The Pale Horse”, describes the symptoms of thallium poisoning.

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About TED-Ed Best of Web

TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

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