Astatine Element Properties

Astatine

p84
Po
Polonium
p85
At
Astatine
p86
Rn
Radon
General
Name(Astatine)
Symbol(At)
Number(85)
Group Number(17)
Group(Halogen)
Block(p)
Density(Nil)
Atomic Weight(210 g/mol)
Atomic Volume(Nil)
Discover(1940)


States
State(Solid)
Melting Point(575 K)
Boiling Point(610 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(Nil)
Heat of Vaporization(40 kJ/mol)


Energies
First Ionization Energy(890 kJ/mole)
Second Ionization Energy(Nil)
Third Ionization Energy(Nil)
Electronegativity(2.2)
Electron Affinity(270 kJ/mole)
Specific Heat(Nil)
Heat Atomization(92 kJ/mole atoms)


Oxidation and Electrons
Shells(2,8,18,32,18,7)
Electron Configuration([Xe] 4f14 5d10 6s2 6p5)
Minimum Oxidation Number(-1)
Maximum Oxidation Number(7)
Minimum Common Oxidation Number(-1)
Maximum Common Oxidation Number(1)


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


Reactions
Reaction with Air(None)
Reaction with 6M HCl(None)
Reaction with 15M HNO3(None)
Reaction with 6M NaOH(None)


Other Forms
Number of Isotopes(0)
Hydride(HAt)
Oxide(None)
Chloride(None)


Radius
Atomic Radius(Nil)
Ionic Radius (1+ ion)(Nil)
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(6 A3)


Abundance
Source(Synthetic(Th or U decay))
Relation Abundance Solar System(Nil)
Abundance Earths Crust(Nil)


p84
Po
Polonium
p85
At
Astatine
p86
Rn
Radon

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