Neptunium - 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. We get a close-up look at neptunium during a visit to the National Nuclear Laboratory at Sellafield.
We can find a tiny amount of neptunium in smoke detectors. This is because the americium found in such detectors disintegrates to neptunium when it emits alpha particles. These alpha particles are used to detect the presence of smoke.
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