On this page I'll provide comprehensive data for Argon. I hope you profit from it.
Argon Overview
Name Origin
Greek: argos (inactive).
Symbol
Ar (Argon)Description
Colorless, odorless, tasteless noble gas. It is the third most abundant element in the earth's atmosphere and makes up about 1%.
Discovery
Discovered By: Sir William Ramsey, Baron Rayleigh
Year: 1894
Location: Scotland
Sources
Continuously released into the air by decay of radioactive potassium-40. Pure form is obtained from fractional distillation of liquid air.
Uses
Used in lighting products. It is often used in filling incandescent light bulbs. Some is mixed with krypton in fluorescent lamps. Crystals in the semiconductor industry are grown in argon atmospheres.
State at 20 °C
Gas
Group
Group Name: Noble Gas
Group in periodic table: 8a
Period in periodic table: 3
Atomic Number
18Learn more about the atomic number.
Atomic Mass
39,948
Learn more about the atomic mass.
Stable Isotopes
Ar36 percent abundance: .4% Ar38 percent abundance: 0% Ar40 percent abundance: 99.6%
Learn more about stable isotopes.
Radioactive Isotopes
Ar35, Ar37, Ar39, Ar41-44
Learn more about radioactive isotopes.
Atomic Structure
Crystalline Structure
Cubic: Face centered
Learn more about crystalline structure
Shells
Electrons per energy level: 2,8,8
Learn more about electron shells
Electron Configuration
1s2 2s2 2p6 3s2 3p6
Learn more about electron configuration.
Abbreviated Configuration
[Ne] 3s2 3p6
Learn more about abbreviated electron configuration.
Valence Electrons
0
Learn more about valence electrons
Atom Size
Atomic Radius
0.88 Ã…
Learn more about atomic radius.
Covalent Radius
0.98 Ã…
Learn more about covalent radius.
Ionic Radius
--
Learn more about ionic radius.
Molar Volume
23.9 cm³/mol
Learn more about molar volume.
Chemical Properties
Common Oxidation States
First Ionization Energy
First Ionization Potential
Second Ionization Potential
Third Ionization Potential
Physical Properties
Density
Electrical Conductivity
Thermal Conductivity
Elastic Modulus
Coefficient of Thermal Expansion
Learn more about coefficient of thermal expansion.
Heat Properties
Other heat related physical properties:
Melting Point
Boiling Point
Specific Heat
0.520 J/gK
Learn more about specific heat.
Learn more about specific heat.
Heat of Fusion
1.188 kJ/mol
Learn more about heat of fusion.
Heat of Vaporization
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How about an incentive to share this post? (You will help other colleagues find this blog)
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