Template:Infobox terbium

{{Infobox element

|symbol =Tb

|Z =65

|number =65

|name =terbium

|abundance=

|abundance in earth's crust=

|abundance in oceans=

|abundance in solar system=

|left=gadolinium

|right=dysprosium

|above=–

|below=Bk

|image name=Terbium-2.jpg

|appearance=silvery white

|electrons per shell=2, 8, 18, 27, 8, 2

|phase=

|density=8.229 g/cm³

|density conditions=(at 20° C)

|density gpcm3mp=7.65

|melting point K=1629

|melting point C=1356

|melting point F=2473

|boiling point K=3396

|boiling point C=3123

|boiling point F=5653

|heat fusion=10.15

|heat vaporization=391

|heat capacity=28.91

|vapor pressure 1=1789

|vapor pressure 10=1979

|vapor pressure 100=(2201)

|vapor pressure 1 k=(2505)

|vapor pressure 10 k=(2913)

|vapor pressure 100 k=(3491)

|vapor pressure comment=

|crystal structure=hexagonal close packed

|crystal structure Pearson symbol=hP2

|lattice constants=a = 360.56 pm
c = 569.66 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=1.2

|electronegativity comment=(?)

|number of ionization energies=3

|ionization energy 1=565.8

|ionization energy 2=1110

|ionization energy 3=2114

|atomic radius=177

|covalent radius=194±5

|magnetic ordering=paramagnetic at 300 K

|electrical resistivity unit prefix=µ

|electrical resistivity=α, poly: 1.150

|electrical resistivity comment=(at r.t.)

|thermal conductivity=11.1

|thermal expansion=at r.t. poly: 10.3

|speed of sound rod at 20=2620

|magnetic susceptibility= {{val|+146,000|e=−6}}

|magnetic susceptibility ref= (273 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=55.7

|Shear modulus=22.1

|Bulk modulus=38.7

|Poisson ratio=0.261

|Vickers hardness=450–865

|Brinell hardness=675–1200

|CAS number=7440-27-9

|naming=after Ytterby (Sweden), where it was mined

|discovery and first isolation by=Carl Gustaf Mosander

|discovery date=1843

|QID=Q1838

}}