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Iridium - 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. Iridium is element 77 and its symbol is Ir.

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Additional Resources for you to Explore
For all the basics about iridium, check out the Visual Elements Periodic Table.
For amazing photos and facts about europium, check out The Elements by Theodore Gray.
Due to its resistance to wear, an alloy of iridium and osmium was used in fountain pen nibs and, as a school boy, the professor used such a pen to write all of his high-school exams!

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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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