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• n  a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group

• They have tongue-twisting names (praseodymium, gadolinium, cerium, lanthanum, ytterbium, etc.
• My personal favorite is gadolinium.
• Professor Giauque used gadolinium sulfate octahydrate, a colorless crystal substance derived from a rare earth metal.

• Gd
• atomic number 64

News & Articles

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• Updated Safety Information for Gadolinium-Based Contrast Agents
  Health Canada is informing Canadians that certain gadolinium-based contrast agents may have a higher risk than others for a rare but serious skin disease in patients with kidney problems.
  Nov. 14, 2013 - Marketwired via Yahoo! Finance