Did you know the periodic table of chemical elements turned 150 years old in 2019? Published in 1869 by the Russian chemist Dmitri Mendeleev, the periodic table revealed patterns that foretold the existence of new, undiscovered elements. To celebrate the chart's 150th anniversary, the College of Letters and Science asked our experts to share their favorite element. Click the links below to watch each video.
— Becky Oskin, content strategist in the College of Letters and Science