Khoàⁿ "Terbium"--ê goân-sí lōe-iông

{{Infobox element
|number=65
|symbol=Tb
|name=terbium
|left=[[gadolinium]]
|right=[[dysprosium]]
|above=–
|below=[[berkelium|Bk]]
|series=lanthanum-hē
|period=6
|group=n/a
|block=f
|image name=Terbium-2.jpg
|appearance=silvery white
|atomic mass=158.92535
|atomic mass ref=<ref name="IUPAC">[http://www.ciaaw.org/atomic-weights.htm Standard Atomic Weights 2013]. [[Commission on Isotopic Abundances and Atomic Weights]]</ref>
|atomic mass 2=2
|atomic mass comment=
|electron configuration=&#91;[[xenon|Xe]]&#93; 4f<sup>9</sup> 6s<sup>2</sup>
|electrons per shell=2, 8, 18, 27, 8, 2
|phase=solid
|density gpcm3nrt=8.23
|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
|oxidation states=4, '''3''', 2, 1
|oxidation states comment=(a weakly [[base (chemistry)|basic]] oxide)
|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 [[room temperature|r.t.]])
|thermal conductivity=11.1
|thermal expansion=at&nbsp;{{abbr|r.t.|room temperature}} α,&nbsp;poly: 10.3
|speed of sound rod at 20=2620
|Young's modulus=α&nbsp;form: 55.7
|Shear modulus=α&nbsp;form:&nbsp;22.1
|Bulk modulus=α&nbsp;form:&nbsp;38.7
|Poisson ratio=α&nbsp;form:&nbsp;0.261
|Vickers hardness=450–865
|Brinell hardness=675–1200
|CAS number=7440-27-9
|isotopes=
{{infobox element/isotopes decay | mn=157 | sym=Tb
 | na=[[synthetic radioisotope|syn]] | hl=[[1 E s|71&nbsp;y]]
 | dm=[[electron capture|ε]] | de=0.060 | link1=gadolinium-157 | pn=157 | ps=Gd}}
{{infobox element/isotopes decay2 | mn=158 | sym=Tb
 | na=syn | hl=[[1 E s|180&nbsp;y]]
 | dm1=ε | de1=1.220 | link1=gadolinium-158 | pn1=158 | ps1=Gd
 | dm2=[[beta decay|β<sup>−</sup>]] | de2=0.937 | link2=dysprosium-158 | pn2=158 | ps2=Dy}}
{{infobox element/isotopes decay | mn=159 | sym=Tb | na=100% | hl=– | dm=([[spontaneous fission|SF]]) | de=<74.878 | pn= | ps= }}
|isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
|naming=after [[Ytterby]] (Sweden), where it was mined
|discovery and first isolation by=[[Carl Gustaf Mosander]]
|discovery date=1842
}}
'''Terbium''' sī 1 ê [[hoà-ha̍k goân-sò͘]]. I ê [[goân-chú-hoan]] sī 65, hoà-ha̍k hû-hō sī Tb.

== Chham-khó ==
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