Argon (pronounced /ˈɑrɡɒn/) is a chemical element represented by the symbol Ar. Argon has atomic number 18 and is the third element in group 18 of the periodic table (noble gases). Argon is the third most common gas in the Earth's atmosphere, at 0.93%, making it more common than carbon dioxide. The complete octet (eight electrons) in the outer atomic shell makes it stable and resistant to bonding with other elements. Its triple point temperatureof 83.8058 K is a defining fixed point in the International Temperature Scale of 1990. The name "argon" is derived from the Greek word αργος meaning "inactive", a reference to the fact that the element undergoes almost no chemical reactions. Wikipedia

"It is necessary to know why tungsten becomes helium. There are nine inert Soul-recording gases, why helium? The inert gas for the tungsten octave is xenon. Why should tungsten not refold into xenon? The answer is that it does refold into xenon, but all of the inert gases are within each other and helium is the balancing inert gas of the nine. Xenon expands into krypton. Krypton expands into argon, then into neon until it finds balance in carbon." [Atomic Suicide, page 246]

See Also

Inert Gas
Master Tone
Noble Gas
Table of the Elements - Russell Elements
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