Lutetium
71
Lu
Gruppe
I/T
Periode
6
Blokk
d
Protoner
Elektroner
Nøytroner
71
71
104
Generelle egenskaper
Atomnummer
71
Atomvekt
174,9668
Massetall
175
Kategori
Lantanoider
Farge
Sølv
Radioaktiv
Nei
Lutetia is the ancient name for Paris
Krystallstruktur
Simple Hexagonal
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.
Elektroner per energinivå
2, 8, 18, 32, 9, 2
Elektronkonfigurasjon
[Xe] 4f14 5d1 6s2
Lutetium was the last natural rare earth element to be discovered
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
9,84 g/cm3
Smeltepunkt
1925,15 K | 1652 °C | 3005,6 °F
Kokepunkt
3675,15 K | 3402 °C | 6155,6 °F
Smeltevarme
22 kJ/mol
Fordampningsvarme
415 kJ/mol
Spesifikk varmekapasitet
0,154 J/g·K
Forekomst i jordskorpa
0,000056%
Forekomst i universet
1×10-8%
CAS Number
7439-94-3
PubChem CID Number
23929
Atomegenskaper
Atomradius
174 pm
Kovalent radius
187 pm
Elektronegativitet
1,27 (Pauling-skalaen)
Ioniseringsenergi
5,4259 eV
Molart volum
17,78 cm3/mol
Termisk ledningsevne
0,164 W/cm·K
Oksidasjonstilstander
3
Bruksområder
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
Isotoper
Stabile isotoper
175LuUstabile isotoper
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