"Dysprosium" siû-thin kiên ke chhâ-phe̍t
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無編輯摘要 |
無編輯摘要 |
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Thi 1 hàng:
{{Infobox element
|number=66
|symbol=Dy
|name=dysprosium
|left=[[terbium]]
|right=[[holmium]]
|above=–
|below=[[californium|Cf]]
|series=lanthanum-hi
|group=n/a
|period=6
|block=f
|image name=Dy chips.jpg
|appearance=silvery white
|atomic mass=162.500
|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=1
|atomic mass comment=
|electron configuration=[[[xenon|Xe]]] 4f<sup>10</sup> 6s<sup>2</sup>
|electrons per shell=2, 8, 18, 28, 8, 2
|phase=ku-thí
|density gpcm3nrt=8.540
|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
|oxidation states= 4, '''3''', 2, 1
|oxidation states comment=(a weakly [[base (chemistry)|basic]] oxide)
|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=({{abbr|r.t.|room temperature}})
|thermal conductivity=10.7
|thermal expansion=α, poly: 9.9
|thermal expansion comment=({{abbr|r.t.|room temperature}})
|speed of sound rod at 20=2710
|Young's modulus=α form: 61.4
|Shear modulus=α form: 24.7
|Bulk modulus=α form: 40.5
|Poisson ratio=α form: 0.247
|Vickers hardness=410–550
|Brinell hardness=500–1050
|CAS number=7429-91-6
|isotopes=
{{infobox element/isotopes decay | mn=154 | sym=Dy
| na=[[synthetic radioisotope|syn]] | hl=3.0×10<sup>6</sup> y
| dm=[[alpha decay|α]] | de=2.947 | link1=gadolinium-150 | pn=150 | ps=Gd}}
{{infobox element/isotopes decay2 | mn=156 | sym=Dy | na=0.06% | hl=>1×10<sup>18</sup> y
| dm1=(α) | de1=1.7579 | link1=gadolinium-152 | pn1=152 | ps1=Gd
| dm2=([[double beta decay|β<sup>+</sup>β<sup>+</sup>]]) | link2=gadolinium-156 | de2=2.0108 | pn2=156 | ps2=Gd}}
{{infobox element/isotopes decay2 | mn=158 | sym=Dy | na=0.10% | hl=–
| dm1=(α) | de1=0.8748 | link1=gadolinium-154 | pn1=154 | ps1=Gd
| dm2=(β<sup>+</sup>β<sup>+</sup>) | link2=gadolinium-158 | de2=0.2833 | pn2=158 | ps2=Gd}}
{{infobox element/isotopes decay | mn=160 | sym=Dy | na=2.34% | hl=– | dm=(α) | de=0.4387 | pn=156 | ps=Gd }}
{{infobox element/isotopes decay | mn=161 | sym=Dy | na=18.91% | hl=– | dm=(α) | de=0.3443 | link1=gadolinium-157 | pn=157 | ps=Gd }}
{{infobox element/isotopes decay | mn=162 | sym=Dy | na=25.51% | hl=– | dm=(α) | de=0.0847 | pn=158 | ps=Gd }}
{{infobox element/isotopes decay | mn=163 | sym=Dy | na=24.90% | hl=– | dm=([[spontaneous fission|SF]]) | de=<79.055 | pn= | ps= }}
{{infobox element/isotopes decay | mn=164 | sym=Dy | na=28.18% | hl=– | dm=(SF) | de=<79.499 | pn= | ps= }}
|isotopes comment=Decay modes in parentheses are predicted, but have not yet been observed
|discovered by=[[Lecoq de Boisbaudran]]
|discovery date=1886
}}
'''Dysprosium''' he yit-chúng [[fa-ho̍k ngièn-su]], fa-ho̍k fù-ho vì '''Dy''', ngièn-chṳ́ su-muk he '''66'''.
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