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For all the basics about protactinium, check out the Visual Elements Periodic Table.
For amazing photos and facts about protactinium, check out The Elements by Theodore Gray.
Mendeleev predicted the existence of more elements than were actually found. Some of his predictions were wrong, but usually we celebrate his successes and ignore the failures because the prediction was a real intellectual triumph that laid the foundations of modern chemistry.
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What beneficial uses of radioactive material can you think of? How could it be used in the future?
09/24/2014 • 
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