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Neon is a chemical element on the periodic table. It is part of the noble gas group and it has an atomic number of 10. It is an odorless and tasteless gas.
The word "neon" comes from the Greek word meaning "new" as it was discovered by William Ramsay and Morris W. Travers in 1898.
Neon does not react with other elements, so it is found in pairs by itself. There is not much neon in the air, and it is clear, so we do not see it.
It was previously thought that Neon could not bond with any other elements, creating compounds. However, there have been a few compounds that have been made with neon, such as NeAuF and NeBeS.
Neon gas is used in gas discharge lamps. When electricity goes through the neon, it lights up red. Due to this quality, it is used in light up signs. Similar signs use other gases to make other colors, but they are also often called "neon signs". Neon is also a term referring to a type of color that is very bright, such as lime green.
|Appearance||colorless gas exhibiting an orange-red glow when placed in an electric field|
|Standard atomic weight (Ar, standard)||Lua error in package.lua at line 80: module 'Module:Gapnum' not found.|
|Neon in the periodic table|
|Atomic number (Z)||10|
|Group||group 18 (noble gases)|
|Element category||noble gas|
|Electron configuration||[He] 2s2 2p6|
Electrons per shell
|Phase at STP||Ne: Gas|
|Melting point||24.56 K (−248.59 °C, −415.46 °F)|
|Boiling point||27.104 K (−246.046 °C, −410.883 °F)|
|Density (at STP)||0.9002 g/L|
|when liquid (at b.p.)||1.207 g/cm3|
|Triple point||24.556 K, 43.37 kPa|
|Critical point||44.4918 K, 2.7686 MPa|
|Heat of fusion||0.335 kJ/mol|
|Heat of vaporization||1.71 kJ/mol|
|Molar heat capacity||20.79 J/(mol·K)|
|Covalent radius||58 pm|
|Van der Waals radius||154 pm|
|Spectral lines of neon|
|Natural occurrence||Ne: Primordial|
|Crystal structure||face-centered cubic (fcc)|
|Speed of sound||435 m/s (gas, at 0 °C)|
|Thermal conductivity||49.1×10−3 W/(m·K)|
|Magnetic susceptibility||−6.74·10−6 cm3/mol (298 K)|
|Bulk modulus||654 GPa|
|Prediction||William Ramsay (1897)|
|Discovery and first isolation||William Ramsay & Morris Travers (1898)|
|Main isotopes of neon|
- Meija, J.; Coplen, T. B.; Berglund, M.; Brand, W.A.; De Bièvre, P.; Gröning, M.; Holden, N.E.; Irrgeher, J. et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry 88 (3): 265-91. . https://www.degruyter.com/downloadpdf/j/pac.2016.88.issue-3/pac-2015-0305/pac-2015-0305.xml.
- Hammond, C. R. (2000). The Elements, in Handbook of Chemistry and Physics 81st edition. CRC press. p. 19. . http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elements.pdf.
- Preston-Thomas, H. (1990). "The International Temperature Scale of 1990 (ITS-90)". Metrologia 27: 3–10. . http://www.bipm.org/en/publications/its-90.html.
- Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.122. .
- Shuen-Chen Hwang, Robert D. Lein, Daniel A. Morgan (2005). "Noble Gases". Kirk Othmer Encyclopedia of Chemical Technology. Wiley. pp. 343–383. doi:10.1002/0471238961.0701190508230114.a01.
- Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. .
- Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. .
- Ramsay, William; Travers, Morris W. (1898). "On the Companions of Argon". Proceedings of the Royal Society of London 63 (1): 437–440. .
- "Neon: History". Softciências. http://nautilus.fis.uc.pt/st2.5/scenes-e/elem/e01000.html. Retrieved 2007-02-27.