Lutetium
71
Lu
Groep
n.v.t.
Periode
6
Blok
d
Protonen
Elektronen
Neutronen
71
71
104
Algemene Eigenschappen
Atoomnummer
71
Atomair gewicht
174,9668
Massa Getal
175
Categorie
Lanthaniden
Kleur
Zilver
Radioactief
Nee
Lutetia is the ancient name for Paris
Kristalstructuur
Eenvoudige Hexagonaal
Historie
French chemist Georges Urbain successfully separated lutetium from ytterbia in 1907 in Paris.
Austrian scientist Carl Auer von Welsbach and American chemist Charles James also succeeded in isolating lutetium independently in the same year.
Pure lutetium metal was first produced in 1953.
Austrian scientist Carl Auer von Welsbach and American chemist Charles James also succeeded in isolating lutetium independently in the same year.
Pure lutetium metal was first produced in 1953.
Eletronen per schil
2, 8, 18, 32, 9, 2
Electronconfiguratie
[Xe] 4f14 5d1 6s2
Lutetium was the last natural rare earth element to be discovered
Fysieke Eigenschappen
Fase
Vast
Dichtheid
9,84 g/cm3
Smeltpunt
1925,15 K | 1652 °C | 3005,6 °F
Kookpunt
3675,15 K | 3402 °C | 6155,6 °F
Fusiewarmte
22 kJ/mol
Verdampingswarmte
415 kJ/mol
Specifieke Warmtecapaciteit
0,154 J/g·K
Overvloedig aanwezig in de aardkorst
0,000056%
Overvloedig aanwezig in het universum
1×10-8%
CAS-nummer
7439-94-3
PubChem CID nummer
23929
Atoomeigenschappen
Atoomstraal
174 pm
Covalentiestraal
187 pm
Electronegativiteit
1,27 (Pauling schaal)
Ionisatiepotentiaal
5,4259 eV
Atoomvolume
17,78 cm3/mol
Thermische geleiding
0,164 W/cm·K
Oxidatietoestanden
3
Toepassingen
Lutetium oxide is used to make catalysts for cracking hydrocarbons in the petrochemical industry.
Lutetium aluminum garnet has been proposed for use as a lens material in high refractive index immersion lithography.
Lutetium is used as a phosphor in LED light bulbs.
Lutetium aluminum garnet has been proposed for use as a lens material in high refractive index immersion lithography.
Lutetium is used as a phosphor in LED light bulbs.
Lutetium is considered to be non toxic
Isotopen
Stabiele isotopen
175LuInstabiele isotopen
150Lu, 151Lu, 152Lu, 153Lu, 154Lu, 155Lu, 156Lu, 157Lu, 158Lu, 159Lu, 160Lu, 161Lu, 162Lu, 163Lu, 164Lu, 165Lu, 166Lu, 167Lu, 168Lu, 169Lu, 170Lu, 171Lu, 172Lu, 173Lu, 174Lu, 176Lu, 177Lu, 178Lu, 179Lu, 180Lu, 181Lu, 182Lu, 183Lu, 184Lu