(Argon)
•Atomic mass 39.948
•Atomic Number -18
•Gas at 298 K
•Density-0.0017837 grams per cubic centimeter
•Third Noble gas
•Chemical Symbol-Ar
•It is also obtained from the air as a byproduct of the production of oxygen and nitrogen
•It is the third most atmospheric gas
•Argon is colorless and odorless
•Argon is non reactive and has no effect on living organisms
•Makes up 1% of the air around
•Argon is found in the earth’s crust and in oceans
•It comes from the greek word argos which means lazy
•Argon must be isolated before using
•Mostly used in the metal industry
•Argon is used in light bulbs to help them work better and to prevent filaments from oxidizing
•Used in welding and fluorescent lights
•Used in vacuum tubes
•Lord …show more content…
•No compound of argon
• Argon is also used in argon lasers and argon-dye lasers. A laser is a device that produces very bright light of a single color (frequency). An argon laser is used to treat skin conditions. The laser shines a blue-green light on the affected area of the skin. The energy from the laser is absorbed by hemoglobin and converted to heat.
•The first noble gas to be isolated
•Argon is also used in technical SCUBA diving to inflate the drysuit, due to its
•nonreactive, heat isolating effect
•It is 38% denser than air
•English scientist Henry Cavendish (1731-1810) had predicted the existence of argon 200 years earlier. When Cavendish removed oxygen and nitrogen from air, he found that a very small amount of gas remained. He guessed that another element was in the air, but he was unable to identify what it