| atom | a bivalent and trivalent metallic element of the rare earth group |
|---|---|
| atom | a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group |
| atom | a metallic element of the rare earth group |
| atom | a trivalent metallic element of the rare earth group |
| atom | a trivalent metallic element of the rare earth group |
| atom | a trivalent metallic element of the rare earth group |
| atom | a soft silvery metallic element of the rare earth group |
| atom | a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas |
| atom | a soft silvery metallic element |
| atom | a trivalent metallic element of the rare earth group |
| atom | a gray tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals |
| atom | a hard gray lustrous metallic element that is highly corrosion-resistant |