CAS Number7440-73-5
PubChem CIDna
Raggio Atomico260
Volume Molare71,07
Massa Atomica[223]
Punto di Ebollizione677
Bulk Modulus
CategoriaMetalli Alcalini
Struttura Cristallina
Raggio Covalente348
Electrical Resistivity
Configurazione Elettronica[Rn] 7s1
Elettroni per shell2, 8, 18, 32, 18, 8, 1
Calore di Fusione2
Calore di Evaporazione65
Potenziale di Ionizzazione4,073
Magnetic Ordering
Magnetic Susceptibility
Mass Number87
Punto di Fusione23
Numero Atomico223
Stato di Ossidazione1
Poisson Ratio
Shear Modulus
Capacità Termica Specifica-
Conduttività Termica0,15
Van der Waals radius
Young's Modulus
Abbondanza sulla crosta terrestrena
Abbondanza nell'universona
Fr Francio 87 (223) 1 7 s 87 27.0 677.0 [Rn] 7s1 2 8 18 32 18 8 1 N/A Silver Cubic: Body centered 0.7 {"1":"380"} 380 -44 1 2.7 2.1 64.0 15.0 1 21.7 m 31.7m BetaDecay Solid, AlkaliMetal, Metal, Radioactive, Natural FRAN-si-em Highly rare and unstable, radioactive metal. Since its isotopes have such short half-lives there are no commercially significant compounds of francium. Formed by decay of actinium. Chemical properties similar to cesium. Decays to radium or astatine. PyFLvSg6ZDw Francium
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. Il nome deriva dal latino Lutetia, Parigi 87 1939 Marguerite Perey France Named after "France"

Isotopi del lutezio

Standard Atomic Weight


Isotopi Stabili

Isotopi Instabili

199Fr 200Fr 201Fr 202Fr 203Fr 204Fr 205Fr 206Fr 207Fr 208Fr 209Fr 210Fr 211Fr 212Fr 213Fr 214Fr 215Fr 216Fr 217Fr 218Fr 219Fr 220Fr 221Fr 222Fr 223Fr 224Fr 225Fr 226Fr 227Fr 228Fr 229Fr 230Fr 231Fr 232Fr

Lutetium is considered to be non toxic
Lutetium was the last natural rare earth element to be discovered
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.