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Neon

From Simple English Wikipedia, the free encyclopedia
Neon, 00Ne
Neon
Appearancecolorless gas exhibiting an orange-red glow when placed in an electric field
Standard atomic weightAr°(Ne)
20.1797(6)[1]
Neon in theperiodic table
HydrogenHelium
LithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeon
SodiumMagnesiumAluminiumSiliconPhosphorusSulfurChlorineArgon
PotassiumCalciumScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincGalliumGermaniumArsenicSeleniumBromineKrypton
RubidiumStrontiumYttriumZirconiumNiobiumMolybdenumTechnetiumRutheniumRhodiumPalladiumSilverCadmiumIndiumTinAntimonyTelluriumIodineXenon
CaesiumBariumLanthanumCeriumPraseodymiumNeodymiumPromethiumSamariumEuropiumGadoliniumTerbiumDysprosiumHolmiumErbiumThuliumYtterbiumLutetiumHafniumTantalumTungstenRheniumOsmiumIridiumPlatinumGoldMercury (element)ThalliumLeadBismuthPoloniumAstatineRadon
FranciumRadiumActiniumThoriumProtactiniumUraniumNeptuniumPlutoniumAmericiumCuriumBerkeliumCaliforniumEinsteiniumFermiumMendeleviumNobeliumLawrenciumRutherfordiumDubniumSeaborgiumBohriumHassiumMeitneriumDarmstadtiumRoentgeniumCoperniciumNihoniumFleroviumMoscoviumLivermoriumTennessineOganesson
He

Ne

Ar
fluorineneonsodium
Groupgroup 18 (noble gases)
Periodperiod 2
Block p-block
Electron configuration[He] 2s2 2p6
Electrons per shell2, 8
Physical properties
Phaseat STPgas
Melting point24.56 K ​(−248.59 °C, ​−415.46 °F)
Boiling point27.104 K ​(−246.046 °C, ​−410.883 °F)
Density(at STP)0.9002 g/L
when liquid (at b.p.)1.207 g/cm3[2]
Triple point24.556 K, ​43.37 kPa[3][4]
Critical point44.4918 K, 2.7686 MPa[4]
Heat of fusion0.335 kJ/mol
Heat of vaporization1.71 kJ/mol
Molar heat capacity20.79[5] J/(mol·K)
Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)121315182127
Atomic properties
Oxidation states0
Ionization energies
  • 1st: 2080.7 kJ/mol
  • 2nd: 3952.3 kJ/mol
  • 3rd: 6122 kJ/mol
  • (more)
Covalent radius58 pm
Van der Waals radius154 pm
Color lines in a spectral range
Spectral lines of neon
Other properties
Natural occurrenceprimordial
Crystal structureface-centered cubic (fcc)
Face-centered cubic crystal structure for neon
Speed of sound435m/s (gas, at 0 °C)
Thermal conductivity49.1×10−3 W/(m⋅K)
Magnetic orderingdiamagnetic[6]
Molar magnetic susceptibility−6.74·10−6 cm3/mol (298 K)[7]
Bulk modulus654 GPa
CAS Number7440-01-9
History
PredictionWilliam Ramsay (1897)
Discovery and first isolationWilliam Ramsay &Morris Travers[8][9] (1898)
Isotopes of neon
Main isotopes[10]Decay
abun­dancehalf-life(t1/2)modepro­duct
20Ne90.5%stable
21Ne0.27%stable
22Ne9.25%stable
 Category: Neon
| references

Neon is achemical element on the periodic table. It is part of thenoble gas group and it has an atomic number of 10. It is an odorless and tasteless gas (at 15 degrees Celsius atstandard pressure).

Neon does not react with other elements, so it is found by itself. There is not much neon in theair, 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.

History

[change |change source]

Two British scientists, Sir William Ramsay and Morris Travers, discovered neon, argon, krypton, and xenon. Together they discovered a brand new gas element in 1898. Four years before, Ramsay, a physical chemist, had found argon and was the first person to isolatehelium in 1895. The scientists frozeargon, using liquid air, and then evaporated this to collect the gas that is produced. Using a high voltage, they collected the first sample of the gas. To their surprise, the gas illuminated the glass tubes and glowed with bright crimson light.[11]

Upon discovery, the two scientists decided to name the new gas Neon, after the Greek word Neos, meaning the new one. While Ramsay and Travers discovered neon gas, they didn’t inventneon lamps. It wasn’t until 1902 when French engineer and inventor Georges Claude showcased the first neon light.

Uses

[change |change source]

Neon gas is used ingas discharge lamps. Whenelectricity 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 aslime green.

Neon

Related pages

[change |change source]

References

[change |change source]
  1. "Standard Atomic Weights: Neon".CIAAW. 1985.
  2. Hammond, C. R. (2000).The Elements, in Handbook of Chemistry and Physics 81st edition(PDF). CRC press. p. 19.ISBN 0849304814.
  3. Preston-Thomas, H. (1990)."The International Temperature Scale of 1990 (ITS-90)".Metrologia.27:3–10.Bibcode:1990Metro..27....3P.doi:10.1088/0026-1394/27/1/002.
  4. 4.04.1Haynes, William M., ed. (2011).CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL:CRC Press. p. 4.122.ISBN 1439855110.
  5. 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.
  6. Magnetic susceptibility of the elements and inorganic compounds, inLide, D. R., ed. (2005).CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press.ISBN 0-8493-0486-5.
  7. Weast, Robert (1984).CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110.ISBN 0-8493-0464-4.
  8. Ramsay, William; Travers, Morris W. (1898). "On the Companions of Argon".Proceedings of the Royal Society of London.63 (1):437–440.doi:10.1098/rspl.1898.0057.
  9. "Neon: History". Softciências. Retrieved2007-02-27.
  10. Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021)."The NUBASE2020 evaluation of nuclear properties"(PDF).Chinese Physics C.45 (3): 030001.doi:10.1088/1674-1137/abddae.
  11. Mama, Neon."The History Of Neon Signs and Lights".Neon Mama. Archived fromthe original on 2022-05-27. Retrieved2022-03-23.
H He
LiBe BCNOFNe
NaMg AlSiPSClAr
KCa ScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSr YZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnNhFlMcLvTsOg
Alkali metalsAlkaline earth metalsLanthanidesActinidesTransition metalsPoor metalsMetalloidsOthernonmetalsHalogensNoble gases


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