TCA: Chemistry: LanthanidesOnline version Match the Name to the Letter by Elvira Trevino 1 Lanthanum 2 Cerium 3 Praseodymium 4 Neodymium 5 Promethium 6 Samarium 7 Europium 8 Gadolinium 9 Terbium 10 Dysprosium 11 Holmium 12 Erbium 13 Thulium 14 Ytterbium 15 Lutetium