Lutetium
71
Lu
Gruppe
n/a
Periode
6
Block
d
Protonen
Elektronen
Neutronen
71
71
104
Generelle Eigenschaften
Ordnungszahl
71
Atommasse
174,9668
Massenzahl
175
Kategorie
Lanthanoide
Farbe
Silber
Radioaktiv
Nein
Lutetia ist der antike Name für Paris
Kristallstruktur
Einfach hexagonal
Geschichte
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.
Elektronen pro Schale
2, 8, 18, 32, 9, 2
Elektronenkonfiguration
[Xe] 4f14 5d1 6s2
Lutetium was the last natural rare earth element to be discovered
Physikalische Eigenschaften
Aggregatzustand
Fest
Dichte
9,84 g/cm3
Schmelzpunkt
1925,15 K | 1652 °C | 3005,6 °F
Siedepunkt
3675,15 K | 3402 °C | 6155,6 °F
Schmelzwärme
22 kJ/mol
Verdampfungswärme
415 kJ/mol
Spezifische Wärmekapazität
0,154 J/g·K
Häufigkeit in der Erdkruste
0,000056%
Häufigkeit im Universum
1×10-8%
CAS-Nummer
7439-94-3
PubChem CID-Nummer
23929
Atomeigenschaften
Atomradius
174 pm
Kovalenter Radius
187 pm
Elektronegativität
1,27 (Pauling-Skala)
Ionisierungsenergie
5,4259 eV
Molares Volumen
17,78 cm3/mol
Wärmeleitfähigkeit
0,164 W/cm·K
Oxidationszustände
3
Anwendung
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
Isotope
Stabile Isotope
175LuInstabile Isotope
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