Template:Infobox yttrium

{{infobox element

|symbol =Y

|Z =39

|number =39

|name =yttrium

|abundance=

|abundance in earth's crust=

|abundance in oceans=

|abundance in solar system=

|left=strontium

|right=zirconium

|above=Sc

|below=Lu

|image name=Yttrium_sublimed_dendritic_and_1cm3_cube.jpg

|appearance=silvery white

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

|phase=

|phase comment=

|density=4.469 g/cm³

|density conditions=(at 20° C)

|density gpcm3nrt=

|density gpcm3mp=4.24

|melting point K=1799

|melting point C=1526

|melting point F=2779

|boiling point K=3203

|boiling point C=2930

|boiling point F=5306

|heat fusion=11.42

|heat vaporization=363

|heat capacity=26.53

|vapor pressure 1=1883

|vapor pressure 10=2075

|vapor pressure 100= (2320)

|vapor pressure 1 k= (2627)

|vapor pressure 10 k= (3036)

|vapor pressure 100 k= (3607)

|vapor pressure comment=

|crystal structure=hexagonal close packed

|crystal structure Pearson symbol=hP2

|lattice constants=a = 364.83 pm
c = 573.17 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=1.22

|number of ionization energies=3

|ionization energy 1=600

|ionization energy 2=1180

|ionization energy 3=1980

|atomic radius=180

|covalent radius=190±7

|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=α, poly: 596

|electrical resistivity unit prefix=n

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

|thermal conductivity=17.2

|thermal expansion=

|thermal expansion comment={{val|11.21|e=−6}}/K (at 20 °C){{efn|text=The thermal expansion is anisotropic: the parameters (at 20 °C) for each crystal axis are α_a = {{val|7.42|e=−6}}/K, α_c = {{val|18.80|e=−6}}/K, and α_average = α_V/3 = {{val|11.21|e=−6}}/K.}}

|speed of sound rod at 20=3300

|magnetic susceptibility={{val|+2.15|e=−6}}

|magnetic susceptibility ref= (2928 K){{Cite book|title=CRC, Handbook of Chemistry and Physics|last=Weast|first=Robert|publisher=Chemical Rubber Company Publishing|year=1984|isbn=0-8493-0464-4|location=Boca Raton, Florida|pages=E110}}

|Young's modulus=63.5

|Shear modulus=25.6

|Bulk modulus=41.2

|Poisson ratio=0.243

|Brinell hardness=200–589

|CAS number=7440-65-5

|naming=after Ytterby (Sweden) and its mineral ytterbite (gadolinite)

|discovered by=Johan Gadolin

|discovery date=1794

|first isolation by=Friedrich Wöhler

|first isolation date=1838

|QID=Q941

}}