Editing Template:Infobox francium

{{infobox element
|number=87
|symbol=Fr
|name=francium
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[radon]]
|right=[[radium]]
|above=[[caesium|Cs]]
|below=([[Ununennium|Uue]])
|category=alkali metal
|group=1
|period=7
|block=s
|appearance=
|electron configuration=&#91;[[radon|Rn]]&#93; 7s<sup>1</sup>
|electrons per shell=2, 8, 18, 32, 18, 8, 1
|phase=solid
|phase comment=''(predicted)''
|density gpcm3nrt=2.8–3.0
|density gpcm3nrt comment=''(extrapolated)''<ref name="B&K">{{cite journal
|last1=Bonchev |first1=Danail |last2=Kamenska |first2=Verginia |year=1981 |title=Predicting the Properties of the 113–120 Transactinide Elements |journal=Journal of Physical Chemistry |volume=85 |issue=9 |pages=1177–1186 |publisher=American Chemical Society |doi=10.1021/j150609a021 |url=https://www.researchgate.net/publication/239657207_Predicting_the_properties_of_the_113_to_120_transactinide_elements }}</ref>
|melting point K=? 300
|melting point C=30
|melting point F=80
|boiling point K=? 950
|boiling point C=680
|boiling point F=1300
|heat fusion=
|heat vaporization=
|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&nbsp;strongly [[base (chemistry)|basic]] oxide)
|electronegativity=&gt;0.79
|number of ionization energies=1
|ionization energy 1=393
|ionization energy 1 ref=<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
|magnetic susceptibility=
|magnetic susceptibility ref=
|isotopes=
{{infobox element/isotopes decay | mn=221 | sym=Fr
|na=[[trace radioisotope|trace]] | hl=4.8&nbsp;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&nbsp;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&nbsp;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
|QID=Q671
}}<!--

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{{Infobox element/element navigation|symbol=Fr}}
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</noinclude>