| | cerium, Ce, atomic number 58; europium, Eu, atomic number 63; neodymium, Nd, atomic number 60; praseodymium, Pr, atomic number 59; samarium, Sm, atomic number 62; terbium, Tb, atomic number 65; thorium, Th, atomic number 90; thulium, Tm, atomic number 69; ytterbium, Yb, atomic number 70 |