Francium Element Properties

Francium

p86
Rn
Radon
s87
Fr
Francium
s88
Ra
radium
General
Name(Francium)
Symbol(Fr)
Number(87)
Group Number(1)
Group(Alkali metals)
Block(s)
Density(Nil)
Atomic Weight(223 g/mol)
Atomic Volume(Nil)
Discover(1939)


States
State(Solid)
Melting Point(300 K)
Boiling Point(950 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(2 kJ/mol)
Heat of Vaporization(65 kJ/mol)


Energies
First Ionization Energy(384 kJ/mole)
Second Ionization Energy(Nil)
Third Ionization Energy(Nil)
Electronegativity(0.7)
Electron Affinity(Nil)
Specific Heat(Nil)
Heat Atomization(73 kJ/mole atoms)


Oxidation and Electrons
Shells(2,8,18,32,18,8,1)
Electron Configuration([Rn] 7s1)
Minimum Oxidation Number(0)
Maximum Oxidation Number(1)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(1)


Appearance and Characteristics
Crystal Structure(cubic body centered)
Characteristics(Radioactive)
Color(Nil)
Uses(Nil)
Hardness(Nil)
Toxicity(None)


Reactions
Reaction with Air(None)
Reaction with 6M HCl(vigorous, =>H2, FrCl)
Reaction with 15M HNO3(None)
Reaction with 6M NaOH(vigorous, =>H2, FrOH)


Other Forms
Number of Isotopes(1)
Hydride(None)
Oxide(None)
Chloride(None)


Radius
Atomic Radius(Nil)
Ionic Radius (1+ ion)(194 pm)
Ionic Radius (1- ion)(Nil)
Ionic Radius (2+ ion)(Nil)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(Nil)


Conductivity
Thermal Conductivity(Nil)
Electrical Conductivity(Nil)
Polarizability(48.7 A3)


Abundance
Source(Synthetic(U-235 decay))
Relation Abundance Solar System(Nil)
Abundance Earths Crust(Nil)


p86
Rn
Radon
s87
Fr
Francium
s88
Ra
radium

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