Skip to main content

Protactinium (new) - Periodic Table of Videos


192 Questions Answered

Best of Web

Let’s Begin…

The team at periodicvideos has created a TED-Ed Lesson for every element of the periodic table. Protactinium is element number 91 on the periodic table.

Mendeleev predicted the existence of more elements than were actually found. Some of his predictions were wrong, but usually we celebrate his successes and ignore the failures because the prediction was a real intellectual triumph that laid the foundations of modern chemistry.

About TED-Ed Best of Web

TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

Meet The Creators

More from Periodic Videos