Template:Infobox francium

{{infobox element

|symbol =Fr

|Z =87

|number =87

|name =francium

|abundance=

|abundance in earth's crust=

|abundance in oceans=

|abundance in solar system=

|left=radon

|right=radium

|above=Cs

|below=(Uue)

|appearance=

|electrons per shell=2, 8, 18, 32, 18, 8, 1

|phase=solid

|density gpcm3nrt=2.458

|density gpcm3nrt comment=(estimated)

|melting point K=300

|melting point C=27

|melting point F=81

|melting point comment=

|boiling point K=950

|boiling point C=677

|boiling point F=1251

|boiling point comment=

|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)

|lattice constant=a = 670.4 pm (estimated){{cite book |last=Arblaster |first= John W. |title=Selected Values of the Crystallographic Properties of Elements |publisher=ASM International |publication-place=Materials Park, Ohio |date=2018 |isbn=978-1-62708-155-9}}

|electronegativity=>0.79

|number of ionization energies=1

|ionization energy 1=393

|ionization energy 1 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])

|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=

|naming=after France, homeland of the discoverer

|discovery and first isolation by=Marguerite Perey

|discovery date=1939

|QID=Q671

}}