「Francium」調整以後𣍐蜀樣其地方
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Sĭng hiĕk: '''Francium''' sê siŏh cṳ̄ng gĭng-sṳ̆k, iâ sê siŏh cṳ̄ng huá-hŏk nguòng-só. Nguòng-cṳ̄ sê̤ṳ-só sê 87, huá-hŏk hù-hô̤ sê Fr. ==Huá-hŏ... |
無編輯摘要 |
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Dâ̤ 1 hòng:
{{infobox element
|number=87
|symbol=Fr
|name=franci
|enname=francium
|laname=francium
|left=[[radon]]
|right=[[Lòi (gĭng-sṳ̆k)|radi]]
|above=[[caesium|Caesi]]
|below=([[Ununennium|Uue]])
|series=giĕng-gĭng-sṳ̆k
|group=1
|period=7
|block=s
|appearance=
|atomic mass=(223)
|electron configuration=[[[radon|Rn]]] 7s<sup>1</sup>
|electrons per shell=2, 8, 18, 32, 18, 8, 1
|phase=gó-tā̤
|phase comment=presumably
|density gpcm3nrt=1.87
|density gpcm3nrt comment=''(extrapolated)''
|melting point K=? 300
|melting point C=27
|melting point F=80
|boiling point K=? 950
|boiling point C=677
|boiling point F=1250
|heat fusion=ca. 2
|heat vaporization=ca. 65
|vapor pressure 1=404
|vapor pressure 10=454
|vapor pressure 100=519
|vapor pressure 1 k=608
|vapor pressure 10 k=738
|vapor pressure 100 k=946
|vapor pressure comment=''(extrapolated)''
|crystal structure=body-centered cubic
|crystal structure comment=''(extrapolated)''
|oxidation states='''+1'''
|oxidation states comment=(a strongly [[base (chemistry)|basic]] oxide)
|electronegativity=0.7
|number of ionization energies=1
|ionization energy 1=393<ref>ISOLDE Collaboration, J. Phys. B 23, 3511 (1990) ([http://iopscience.iop.org/0953-4075/23/20/014/pdf/0953-4075_23_20_014.pdf PDF online])</ref>
|covalent radius=260
|covalent radius comment=''(extrapolated)''
|Van der Waals radius=348
|Van der Waals radius comment=''(extrapolated)''
|magnetic ordering=Paramagnetic
|electrical resistivity=3
|electrical resistivity unit prefix=µ
|electrical resistivity comment=''(calculated)''
|thermal conductivity=15
|thermal conductivity comment=''(extrapolated)''
|CAS number=7440-73-5
|isotopes=
{{infobox element/isotopes decay | mn=221 | sym=Fr
| na=[[trace radioisotope|trace]] | hl=4.8 min
| dm=[[alpha emission|α]] | de=6.457 | link1=astatine-217 | pn=217 | ps=At}}
{{infobox element/isotopes decay | mn=222 | sym=Fr
| na=[[synthetic radioisotope|syn]] | hl=14.2 min
| dm=[[beta emission|β<sup>−</sup>]] | de=2.033 | link1=radium-222 | pn=222 | ps=Ra}}
{{infobox element/isotopes decay2 | mn=223 | sym=Fr
| na=trace | hl=22.00 min
| dm1=β<sup>−</sup> | de1=1.149 | link1=radium-223 | pn1=223 | ps1=Ra
| dm2=α | de2=5.430 | link2=astatine-219 | pn2=219 | ps2=At}}
|isotopes comment=
|naming=after [[France]], homeland of the discoverer
|discovery and first isolation by=[[Marguerite Perey]]
|discovery date=1939
}}
'''Francium''' sê siŏh cṳ̄ng [[gĭng-sṳ̆k]], iâ sê siŏh cṳ̄ng [[huá-hŏk nguòng-só]]. [[Nguòng-cṳ̄ sê̤ṳ-só]] sê 87, huá-hŏk hù-hô̤ sê Fr.
==Huá-hŏk séng-cék==
第5行 ⟶ 第76行：
==Cié-chṳ̄==
==Chăng-kō̤ cṳ̆-lâiu==
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{{Ciŭ-gĭ-biēu}}
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