Radium - 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 radium, a famous (and dangerous) element.
As the professor explained, radium was used for treating cancer. Could barium, the element just above radium on the periodic table and with a very similar chemistry, be used in the same way?
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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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