「Lòi (gĭng-sṳ̆k)」調整以後𣍐蜀樣其地方

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無編輯摘要
無編輯摘要
Dâ̤ 1 hòng:
{{Infobox element
[[File:Radium226.jpg|thumb|right|200px|Lòi]]
|number=88
|symbol=Ra
|name=Ra­di
|enname=radium
|laname=radium
|left= [[francium|Franci]]
|right=[[actinium|Actini]]
|above=[[barium|Bari]]
|below=([[Unbinilium|Ubn]])
|series=giĕng-tū gĭng-sṳ̆k
|group=2
|period=7
|block=s
|image name=Radium226.jpg
|appearance=silvery white metallic
|atomic mass=(226)
|electron configuration=&#91;[[radon|Rn]]&#93; 7s<sup>2</sup>
|electrons per shell=2, 8, 18, 32, 18, 8, 2
|phase=gó-tā̤
|density gpcm3nrt=5.5
|melting point K=973
|melting point C=700
|melting point F=1292
|melting point comment=''(disputed)''
|boiling point K=2010
|boiling point C=1737
|boiling point F=3159
|heat fusion=8.5
|heat vaporization=113
|vapor pressure 1=819
|vapor pressure 10=906
|vapor pressure 100=1037
|vapor pressure 1 k=1209
|vapor pressure 10 k=1446
|vapor pressure 100 k=1799
|vapor pressure comment=
|crystal structure=body-centered cubic
|oxidation states='''2'''
|oxidation states comment=(expected to have a strongly [[base (chemistry)|basic]] oxide)
|electronegativity=0.9
|number of ionization energies=2
|ionization energy 1=509.3
|ionization energy 2=979.0
|covalent radius=221±2
|Van der Waals radius=283
|magnetic ordering=nonmagnetic
|electrical resistivity unit prefix=µ
|electrical resistivity at 20=1
|thermal conductivity=18.6
|CAS number=7440-14-4
|isotopes=
{{infobox element/isotopes decay | mn=223 | sym=Ra
| na=[[trace radioisotope|trace]] | hl=11.43&nbsp;d
| dm=[[alpha emission|α]] | de=5.99 | link1=radon-219 | pn=219 | ps=Rn}}
{{infobox element/isotopes decay | mn=224 | sym=Ra
| na=trace | hl=3.6319&nbsp;d
| dm=α | de=5.789 | link1=radon-220 | pn=220 | ps=Rn}}
{{infobox element/isotopes decay | mn=225 | sym=Ra
| na=trace | hl=14.9&nbsp;d
| dm=[[beta emission|β<sup>−</sup>]] | de=0.356 | link1=actinium-225 | pn=225 | ps=Ac}}
{{infobox element/isotopes decay | mn=226 | sym=Ra
| na=trace | hl=1600&nbsp;y
| dm=α | de=4.871 | link1=radon-222 | pn=222 | ps=Rn}}
{{infobox element/isotopes decay | mn=228 | sym=Ra
| na=trace | hl=5.75&nbsp;y
| dm=β<sup>−</sup> | de=0.046 | link1=actinium-228 | pn=228 | ps=Ac}}
|isotopes comment=
|discovered by=[[Pierre Curie]] and [[Marie Curie]]
|discovery date=1898
|first isolation by=Marie Curie
|first isolation date=1910
}}
'''Lòi''' (鐳) sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]]. [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 88, huá-hŏk hù-hô̤ sê Ra.
 
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==Cié-chṳ̄==
 
==Chăng-kō̤ cṳ̆-lâiu==
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