The periodic table/Lanthanoids

Lanthanoids:
 * Lanthanum
 * Cerium
 * Praseodymium
 * Neodymium
 * Promethium
 * Samarium
 * Europium
 * Gadolinium
 * Terbium
 * Dysprosium
 * Holmium
 * Erbium
 * Thulium
 * Ytterbium
 * Lutetium