| Rare Earth Elements |
| The Rare Earth Elements are made up of two series of elements, the Lanthanide and Actinide Series. |
| The Lanthanide series: Lanthanum , Cerium , Praseodymium , Neodymium , Promethium , Samarium , Europium , Gadolinium , Terbium , Dysprosium , Holmium , Erbium , Thulium , Ytterbium and Lutetium . |
| The Actinide series: Actinium , Thorium , Protactinium , Uranium , Neptunium , Plutonium , Americium , Curium , Berkelium , Californium , Einsteinium , Fermium , Mendelevium , Nobelium and Lawrencium . |