Molybdenum - 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 molybdenum, an element that plays a crucial role in biology.
The blades of some 14th century Japanese swords have been found to contain enough molybdenum to be considered as a type of moly steel.
Can you find molecules with single, double, and triple bonds between two atoms of the the same element?