Lantanoids
Periodic table of D.I. Mendeleev, the names and properties of chemical elements.
| Number | Atomic mass | Name | Group | Period | Latin name | Family | Year of discovery | |
|---|---|---|---|---|---|---|---|---|
| 57 | La | 138,90547 | Лантан | 6 | Lanthanum | Lantanoid | 1839 | |
| 58 | Ce | 140,116 | Церий | 6 | Cerium | Lantanoid | 1803 | |
| 59 | Pr | 140,90765 | Празеодим | 6 | Praseodymium | Lantanoid | 1895 | |
| 60 | Nd | 144,242 | Неодим | 6 | Neodymium | Lantanoid | 1895 | |
| 61 | Pm | [146,9151] | Прометий | 6 | Promethium | Lantanoid | 1945 | |
| 62 | Sm | 150,36 | Самарий | 6 | Samarium | Lantanoid | 1879 | |
| 63 | Eu | 151,964 | Европий | 6 | Europium | Lantanoid | 1901 | |
| 64 | Gd | 157,25 | Гадолиний | 6 | Gadolinium | Lantanoid | 1880 | |
| 65 | Tb | 158,92535 | Тербий | 6 | Terbium | Lantanoid | 1843 | |
| 66 | Dy | 162,500 | Диспрозий | 6 | Dysprosium | Lantanoid | 1886 | |
| 67 | Ho | 164,93032 | Гольмий | 6 | Holmium | Lantanoid | 1878 | |
| 68 | Er | 167,259 | Эрбий | 6 | Erbium | Lantanoid | 1842 | |
| 69 | Tm | 168,93421 | Тулий | 6 | Thulium | Lantanoid | 1879 | |
| 70 | Yb | 173,04 | Иттербий | 6 | Ytterbium | Lantanoid | 1878 | |
| 71 | Lu | 174,967 | Лютеций | 3 | 6 | Lutetium | Lantanoid | 1907 |
