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Ununpentium - 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. Element number 115 still has the temporary name ununpentium.

Ununpentium is a radioactive element and all of its known isotopes are unstable. What is the half-life of the longest-lived isotope of Ununpentium (289Uup)?

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