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|Atomic Weight||39.948 g/mol39.948 amu|
|Chemical series||Noble gases|
|Appearance|| Colorless |
|Group, Period, Block||18, 3, p|
|Electron configuration||[Ne] 3s2 3p6|
|Electrons per shell|| 2,8,8 |
|Melting point|| 83.80 K-189.35 °C |
|Boiling point|| 87.30 K-185.85 °C |
|Isotopes of Argon|
|All properties are for STP unless otherwise stated.|
Argon is a chemical element known by the chemical symbol Ar. is one of the most abundant elements and the third most common gas in the Earth’s atmosphere. Argon is located in the group VIIIA that is also called noble gases. Noble gases are generally colorless, odorless, and tasteless. Noble gases have extremely low boiling points and freezing points. Argon was discovered by a Scottish chemist named Sir William Ramsay, and an English chemist named Lord Rayleigh in 1984. It was isolated by examination of remains obtained by remove nitrogen, oxygen, carbon dioxide, and water from clean air. They named this element “Argon” from Greek word “argos” meaning inactive or indolence, because this gas does not react with anything. The original symbol for Argon was the letter “A” ,then IUPAC changed the symbol to “Ar” in 1957.
Argon is a chemical element in the periodic table. Argon is the eighteenth element of the periodic table. It means Argon has eighteen electrons, eighteen protons, and two neutrons. The atomic number of Argon is 39.948.Argon is a colorless, gaseous element which is in the noble gases group and nonmetal group. Argon also has a melting point of 83.8 Kelvin (-189.35 Celsius or -308.83 Fahrenheit), a boiling point of 87.3 Kelvin (-185.5 Celsius or -302.53 Fahrenheit), and a density of 1.7837 gram per liter. It has the crustal abundance number of 3.5 milligrams per kilogram and the oceanic abundance number of 0.45 milligrams per liter. (Argon forms a anthracite with “b” hydroquinone which is false chemical bonds) Argon is two and a half times more soluble in water than nitrogen. When you view through the spectroscope, you will see a lot of red lines.
Argon can be found in the Earth's atmosphere it contains 0.94% of Argon and Mar's atmosphere contains 1.6% of Argon. Argon-39 is made by cosmic ray activity. There are 22 known isotopes of Argon from Ar-31 to Ar-53 (except Ar-52) . Natural argon is a fusion of three major isotopes: Ar-36 (0.34%), Ar-38 (0.06%), and Ar-40 (99.6%). Not all isotopes of argon have half life time due to their stability of Ar-36, Ar-38, and Ar-40. It means that those isotopes have a stable life time and they will not change the shapes. For example: Ar-37 has 35 days of half life time, Ar-39 has 269 days of half life time, and Ar-41 has 1.8 hour of half life time. Due to its common nature, the cost of pure Argon of 100 gram is 5 cents.
Argon is used mainly in electrical lights, vivid tubes, photo tubes, glow tubes, and lasers. Argon is used in lighting where nitrogen is unsuitable. It is very important for the metal manufacture of stainless steels and silicon crystals because Argon is used as a shield in arc fusing and cutting. Argon-39 is used for applications and primarily (ice coring). A mixture of Argon and Carbon dioxide is sometimes used in metal insert gas fusing of common structures. Argon is also used in wine-making to separate oxygen in barrels.
Argon is one of the most health-effecting elements but Argon does not damage the environment. Argon is used in cryosurgery because it is needed for use in extremely cold temperature to specifically destroy the small areas of diseases under the skin. If you breathe pure Argon in, you will start to feel the sensation of dizziness, headache, suffocation, and eventually death. If your skin or eyes have contact with liquid Argon, they will become frostbite.
- ↑ 1.0 1.1 1.2 Unknown Author. Argon. www.chemicool.com. Web. Access 27 November 2012 .
- ↑ 2.0 2.1 Gagnon, Steve. The Element Argon. education.jlab.org. Web. Access 27 November 2012 .
- ↑ Winter, Mark. Argon: the essentials. www.webelements.com. Web. Access 27 November 2012 .
- ↑ Helmenstine, Anne. Argon Facts. www.about.com. Web. Access 27 November 2012 .
- ↑ Bentor, Tinon. Periodic Table: Argon. www.chemicalelements.com. Web. Access 27 November 2012 .
- ↑ Unknown Author. Argon (Ar) Properties, Uses, Applications Argon Gas and Liquid Argon. www.uigi.com. Web. Access 27 November 2012 .
- ↑ Unknown Author. Argon Ar. www.lenntech.com. Web. Access 27 November 2012 .