Cerium, 2011 Dysprosium, 2011 Erbium, 2011 Europium, 2011 Gandolinium, 2011 Holmium, 2011 Lanthanum, 2011 Lutetium, 2011 Neodymium, 2011 Praseodymium, 2011 Samarium, 2011 Scandium, 2011 Terbium, 2011 Thulium, 2011 Ytterbium, 2011 Yttrium, 2011