Template:Infobox lutetium

{{infobox element

|symbol =Lu

|Z =71

|number =71

|name =lutetium

|abundance=

|abundance in earth's crust=

|abundance in oceans=

|abundance in solar system=

|left=ytterbium

|right=hafnium

|above=Y

|below=Lr

|image name=Lutetium_sublimed_dendritic_and_1cm3_cube.jpg

|appearance=silvery white

|electrons per shell=2, 8, 18, 32, 9, 2

|phase=

|density=9.840 g/cm³

|density conditions=(at 20° C)

|density gpcm3mp=9.3

|melting point K=1925

|melting point C=1652

|melting point F=3006

|boiling point K=3675

|boiling point C=3402

|boiling point F=6156

|heat fusion=ca. 22

|heat vaporization=414

|heat capacity=26.86

|vapor pressure 1=1906

|vapor pressure 10=2103

|vapor pressure 100=2346

|vapor pressure 1 k=(2653)

|vapor pressure 10 k=(3072)

|vapor pressure 100 k=(3663)

|vapor pressure comment=

|crystal structure=hexagonal close packed

|crystal structure Pearson symbol=hP2

|lattice constants=a = 350.53 pm
c = 554.93 pm (at 20 °C){{cite book |last=Arblaster |first= John W. |title=Selected Values of the Crystallographic Properties of Elements |publisher=ASM International |publication-place=Materials Park, Ohio |date=2018 |isbn=978-1-62708-155-9}}

|electronegativity=1.27

|number of ionization energies=3

|ionization energy 1=523.5

|ionization energy 2=1340

|ionization energy 3=2022.3

|atomic radius=174

|covalent radius=187±8

|magnetic ordering=paramagnetic

|magnetic ordering ref={{cite book |url=https://web.archive.org/web/20110303222309/http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf|chapter=Magnetic susceptibility of the elements and inorganic compounds| editor = Lide, D. R. | title = CRC Handbook of Chemistry and Physics | edition = 86th | location = Boca Raton (FL) | publisher = CRC Press | year = 2005 | isbn = 0-8493-0486-5 }}

|electrical resistivity unit prefix=n

|electrical resistivity=poly: 582

|electrical resistivity comment=(at {{abbr|r.t.|room temperature}})

|thermal conductivity=16.4

|thermal expansion=poly: 9.9

|thermal expansion comment=(at {{abbr|r.t.|room temperature}})

|magnetic susceptibility=

|magnetic susceptibility ref=

|Young's modulus=68.6

|Shear modulus=27.2

|Bulk modulus=47.6

|Poisson ratio=0.261

|Vickers hardness=755–1160

|Brinell hardness=890–1300

|CAS number=7439-94-3

|naming=after {{lang|la|Lutetia}}, Latin for: Paris, in the Roman era

|discovered by=Carl Auer von Welsbach and Georges Urbain

|discovery date=1906

|first isolation date=1953

|named by=Georges Urbain

|named date=1906

|QID=Q1857

}}