Lanthaniden mei 8, 2010 Brouwers, C.I.J. science Chemie > Elementgroep Lanthaniden Cerium (Ce) Dysprosium (Dy) Erbium (Er) Europium (Eu) Gadolinium (Gd) Holmium (Ho) Lanthanium (La) Lutetium (Lu) Neodymium (Nd) Promethium (Pm) Praseodynium (Pr) Samarium (Sm) Terbium (Tb) Thulium (Tm) Ytterbium (Yb)