Ytterbium

Kemiallinen merkki: Yb
Järjestysluku: 70
Kategoria: lantanoidit
Ryhmä: n/a
Jakso: 6
Lohko: f
Moolimassa: 173,04 g/mol
Elektronia kuorilla: 2, 8, 18, 32, 8, 2
CAS-numero: 7440-64-4
Olomuoto: kiinteä
Tiheys: 6,90 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 1097 K (824 °C, 1515 °F)
Kiehumispiste: 1469 K (1196 °C, 2185 °F)
Kiderakenne: cubic face centered
Hapetusluvut: 2, 3
Elektronegatiivisuus: 1,1 (Pauling-asteikko)
Nimen alkuperä: Ytterby
Nimen tarkoitus: the name of a village in Sweden
Faktoja:
- is a soft, malleable and rather ductile element that exhibits a bright silvery luster
- is a rare earth of the lanthanide series and is found in the minerals gadolinite, monazite, and xenotime
- is sometimes associated with yttrium or other related elements and is used in certain steels
- natural ytterbium is a mix of seven stable isotopes
- as a rare and expensive, thulium does not have many practical applications
- is fairly stable, it nevertheless should be stored in closed containers to protect it from air and moisture
- compounds of ytterbium should be treated as highly toxic although initial studies appear to indicate that the danger is limited
- is used e,g, as a source of X-rays, in doping of stainless steel, and in solar cells
- metallic ytterbium dust poses a fire and explosion hazard