Argon Element Properties

Argon

p17
Cl
Chlorine
p18
Ar
Argon
s19
K
Potassium
General
Name(Argon)
Symbol(Ar)
Number(18)
Group Number(18)
Group(Noble Gas)
Block(p)
Density(0.0017824 g/cm3)
Atomic Weight(39.948 g/mol)
Atomic Volume(28.5 cm3/mol)
Discover(1894)


States
State(Gas)
Melting Point(83.80 K)
Boiling Point(87.30 K)
Triple Point(83.8058 K)
Critical Point(150.87 K)
Heat of Fusion(1.18 kJ/mol)
Heat of Vaporization(6.43 kJ/mol)


Energies
First Ionization Energy(1520.5 kJ/mole)
Second Ionization Energy(2665.8 kJ/mole)
Third Ionization Energy(3930.8 kJ/mole)
Electronegativity(Nil)
Electron Affinity(Nil)
Specific Heat(0.520 J/gK)
Heat Atomization(0 kJ/mole atoms)


Oxidation and Electrons
Shells(2,8,8)
Electron Configuration([Ne] 3s2 3p6)
Minimum Oxidation Number(0)
Maximum Oxidation Number(0)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(0)


Appearance and Characteristics
Crystal Structure(cubic face centered)
Characteristics(Inert)
Color(colorless)
Uses(lasers, light bulbs)
Hardness(mohs)
Toxicity(No)


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(3)
Hydride(None)
Oxide(None)
Chloride(None)


Radius
Atomic Radius(98 pm)
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(0.02 J/m-sec-deg)
Electrical Conductivity(0 1/mohm-cm)
Polarizability(1.586 A3)


Abundance
Source(Air)
Relation Abundance Solar System(5.004 log)
Abundance Earths Crust(0.5 log)


p17
Cl
Chlorine
p18
Ar
Argon
s19
K
Potassium

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