I know a metal named praseodymium,
A rare earth lanthanide just like cerium.
It has a twin called neodymium.
Combined they make didymium:
Begin again…

I know a metal named neodymium,
A rare earth lanthanide just like cerium.
It has a twin called praseodymium.
Combined they make didymium:
Begin again…

Based on Michael Finnegan
Learn more about Praseodymium & Neodymium