Gadolinium - Periodic Table of Videos
The team at periodicvideos has created a TED-Ed Lesson for every element of the periodic table. Gadolinium, element number 64, is fundamental to the success of an MRI scan.
Gadolinium is colorless and its compounds are white because its spectrum has no absorption bands in the visible region. For this reason, gadolinium was not used to produce colors in television screens like some of the other lanthanides were.
Have you ever seen a picture produced by MRI? Why do you think this diagnosis technique is useful?