Template:Infobox dysprosium

{{Infobox element

|symbol =Dy

|Z =66

|number =66

|name =dysprosium

|abundance=

|abundance in earth's crust=

|abundance in oceans=

|abundance in solar system=

|left=terbium

|right=holmium

|above=–

|below=Cf

|image name=Dy chips.jpg

|appearance=silvery white

|electrons per shell=2, 8, 18, 28, 8, 2

|phase=

|density=8.550 g/cm³

|density conditions=(at 20° C)

|density gpcm3mp=8.37

|melting point K=1680

|melting point C=1407

|melting point F=2565

|boiling point K=2840

|boiling point C=2562

|boiling point F=4653

|heat fusion=11.06

|heat vaporization=280

|heat capacity=27.7

|vapor pressure 1=1378

|vapor pressure 10=1523

|vapor pressure 100=(1704)

|vapor pressure 1 k=(1954)

|vapor pressure 10 k=(2304)

|vapor pressure 100 k=(2831)

|vapor pressure comment=

|crystal structure=hexagonal close packed

|crystal structure Pearson symbol=hP2

|lattice constants=a = 359.16 pm
c = 565.01 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=573.0

|ionization energy 2=1130

|ionization energy 3=2200

|atomic radius=178

|covalent radius=192±7

|magnetic ordering=paramagnetic at 300 K

|electrical resistivity unit prefix=n

|electrical resistivity=α, poly: 926

|electrical resistivity comment=(r.t.)

|thermal conductivity=10.7

|thermal expansion=poly: 9.9

|thermal expansion comment=(r.t.)

|speed of sound rod at 20=2710

|magnetic susceptibility= {{val|+103,500|e=−6}}

|magnetic susceptibility ref= (293.2 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=61.4

|Shear modulus=24.7

|Bulk modulus=40.5

|Poisson ratio=0.247

|Vickers hardness=410–550

|Brinell hardness=500–1050

|CAS number=7429-91-6

|naming=after Greek δυσπρόσιτος, "hard to get", for requiring 30 attempts to isolate

|discovered by=Lecoq de Boisbaudran

|discovery date=1886

|first isolation by=Georges Urbain

|first isolation date=1905

|QID=Q1843

}}