Lutetium

Kemiallinen merkki: Lu
Järjestysluku: 71
Kategoria: lantanoidit
Ryhmä: n/a
Jakso: 6
Lohko: f
Moolimassa: 174,967 g/mol
Elektronia kuorilla: 2, 8, 18, 32, 9, 2
CAS-numero: 7439-94-3
Olomuoto: kiinteä
Tiheys: 9,841 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 1925 K (1652 °C, 3006 °F)
Kiehumispiste: 3675 K (3402 °C, 6156 °F)
Kiderakenne: hexagonal
Hapetusluvut: 3
Elektronegatiivisuus: 1,27 (Pauling-asteikko)
Nimen alkuperä: Lutetia
Nimen tarkoitus: the Latin name of Paris; the discoverer was French
Faktoja:
- is a silvery white corrosion-resistant trivalent metal that is relatively stable in air
- is the heaviest and hardest of the rare earth elements
- has the highest melting point of any lanthanide, probably related to the lanthanide contraction
- is very expensive to obtain in useful quantities and therefore it has very few commercial uses
- stable lutetium can be used as catalysts in petroleum cracking in refineries and can also be used in alkylation, hydrogenation, and polymerizat
- lutetium-176 has been used to date the age of meteorites
- was proposed with names aldebaranium, neoytterbium, cassiopium and lutecium
- found with almost all other rare-earth metals but never by itself, lutetium is very difficult to separ
- is one of the most expensive metals, costing about six times as much as gold
- is regarded as having a low degree of toxicity but it and especially its compounds should be handled with care nonetheless
- metal dust of this element is a fire and explosion hazard
- plays no biological role in the human body