Lutetium
71
Lu
Gruppe
n/a
Periode
6
Blokk
d
Protons
Electrons
Neutrons
71
71
104
Generelle eigenskapar
Atomnummer
71
Atommasse
174,9668
Mass Number
175
Kategori
Lantanid
Farge
Silver
Radioactive
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.
Elektron per energinivå
2, 8, 18, 32, 9, 2
Elektronkonfigurasjon
[Xe] 4f14 5d1 6s2
Lutetium was the last natural rare earth element to be discovered
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
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
Fordampingsvarme
415 kJ/mol
Spesifikk varmekapasitet
0,154 J/g·K
Abundance in Earth's crust
0,000056%
Abundance in Universe
1×10-8%
CAS Number
7439-94-3
PubChem CID Number
23929
Atom eigenskapar
Atomradius
174 pm
Kovalent radius
187 pm
Elektronegativitet
1,27 (Paulings skala)
Ioniseringspotensial
5,4259 eV
Molart volum
17,78 cm3/mol
Termisk konduktivitet
0,164 W/cm·K
Oksidasjonstrinn
3
Applications
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
Isotopes
Stable Isotopes
175LuUnstable Isotopes
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