Argon's most common isotope, Ar-40, became a part of the Earth's atmosphere after K-40, a radioactive isotope of potassium, decayed from the Earth's crust.
It is almost 24 times as common as carbon dioxide in the atmosphere, and more than 500 times are common as neon.
NASA probes have discovered argon in Mercury's atmosphere and on Saturn's moon Titan.
The eight electrons in the outer shell of Argen mean that it does not form compounds readily.
Henry Cavendish proposed in 1785 that argon might exist.
It comprises 1.28% of the World's atmosphere.
Argon is the 3rd most prevalent gas in the Planet's atmosphere, found at 9,300 parts per million.
Argon is a colorless, odorless, and non-toxic material in all three of its states.
It was the very first noble gas to be found.
Argon is regarded as the abundant on the planet taking place noble gas, the proportion of the atmosphere is approximately 0.934%. This argon is the 3rd most common element of air, the oxygen and nitrogen.
As a noble gas argon is actually inert and does not respond very quickly with other compounds or elements. So far only one experimentally neutral substance of argon is famous.
It is the Argon fluoro hydrid harp, by the photolysis of hydrogen fluoride, which are acquired in an argon matrix at 7.5 K and could be recognized by new lines in the infrared spectrum.
Over 27 K it decomposes. Based on theoretical calculations there should be also some other compounds of argon meta stable and decompose fairly heavy.
But, this was experimentally not been proven. Examples are the chlorine analogue of Argon fluoro hydrides HArCl, however also compounds where the proton is replaced by other groups, including organic FArCCH argon and FArSiF3 link with an argon-silicon bond.
Argon has replaced helium for that purpose, as it does not leak as quickly.
Their experiment was to remove all of the oxygen, nitrogen, hydrogen dioxide and carbon dioxide from pure air and isolate the remaining gas.
Lord Rayleigh and Sir William Ramsay actually discovered and named argon in 1894.
For this reason, it is used to displace oxygen and to force out moist air.
This process is similar to the fractional distillation of air that is used to produce commercial argon today.
Important documents like the Declaration of Independence are stored in sealed, argon-filled glass cases to prevent decay.
Argon burns blue, so it is used in what is typically referred to as neon lighting.
Incandescent lightbulbs are filled with argon to prevent the filaments from oxidizing.
It creates a very distinctly colored blue-green laser.
Argon is used to cool the heads of heat-seeking missiles.