| Tecken | Yb |
| Atomnummer | 70 |
| Grupp | - |
| Period | 6 |
| Block | f |
| Ämnesklass | Lantanoid |
| Utseende | - |
| Färg | Silver |
| Antal protoner | 70 p+ |
| Antal neutroner | 103 n0 |
| Antal elektroner | 70 e- |
| Fas vid STP | Fast |
| Densitet | 6.9 g/cm3 |
| Relativ atommassa | 173.045 u |
| Smältpunkt | 1097 K 823.85 °C 1514.93 °F |
| Kokpunkt | 1469 K 1195.85 °C 2184.53 °F |
| Ångbildningsvärme | 128 kJ/mol |
| Elektronegativitet (Paulingskalan) | 1.1 |
| Elektronaffinitet | -1.93 kJ/mol |
| Oxidationstal | 0, +1, +2, +3 (a basic oxide) |
| Jonisationspotential |
|
| Upptäckt | Jean Charles Galissard de Marignac (1878) |
| Första isolation | Carl Auer von Welsbach (1906) |
Upptäckten av ytterbium In 1878, the Swiss chemist Jean Charles Galissard de Marignac separated from the rare earth "erbia" another independent component, which he called "ytterbia", for Ytterby, the village in Sweden near where he found the new component of erbium. He suspected that ytterbia was a compound of a new element that he called "ytterbium" (in total, four elements were named after the village, the others being yttrium, terbium, and erbium). In 1907, the new earth "lutecia" was separated from ytterbia, from which the element "lutecium" (now lutetium) was extracted by Georges Urbain, Carl Auer von Welsbach, and Charles James. After some discussion, Marignac's name "ytterbium" was retained. A relatively pure sample of the metal was not obtained until 1953. At present, ytterbium is mainly used as a dopant of stainless steel or active laser media, and less often as a gamma ray source. | |