TED Talks
Ted: Ted Ed: Technetium: Periodic Table of Videos
The team at periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about technetium. It is the first naturally radioactive element on the periodic table. [1:11]
Khan Academy
Khan Academy: Technetium Decay and Its Cardiac Application
Read a passage about technetium decay and its cardiac application and answer the follow-up questions.