Neon

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This airticle is aboot the noble gas. For ither uisses, see Neon (disambiguation).
Neon,  10Ne
Neon discharge tube.jpg
Neon spectra.jpg
Spectral lines o neon in the veesible region
General properties
Name, seembol neon, Ne
Appearance colourless gas exhibitin an orange-reid glow when placed in a heich voltage electric field
Pronunciation /ˈnɒn/
Neon in the periodic cairt
Hydrogen (diatomic nonmetal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline yird metal)
Boron (metalloid)
Carbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oxygen (diatomic nonmetal)
Fluorine (diatomic nonmetal)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline yird metal)
Aluminium (post-transeetion metal)
Silicon (metalloid)
Phosphorus (polyatomic nonmetal)
Sulfur (polyatomic nonmetal)
Chlorine (diatomic nonmetal)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline yird metal)
Scandium (transeetion metal)
Titanium (transeetion metal)
Vanadium (transeetion metal)
Chromium (transeetion metal)
Manganese (transeetion metal)
Airn (transeetion metal)
Cobalt (transeetion metal)
Nickel (transeetion metal)
Capper (transeetion metal)
Zinc (transeetion metal)
Gallium (post-transeetion metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (polyatomic nonmetal)
Bromine (diatomic nonmetal)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline yird metal)
Yttrium (transeetion metal)
Zirconium (transeetion metal)
Niobium (transeetion metal)
Molybdenum (transeetion metal)
Technetium (transeetion metal)
Ruthenium (transeetion metal)
Rhodium (transeetion metal)
Palladium (transeetion metal)
Siller (transeetion metal)
Cadmium (transeetion metal)
Indium (post-transeetion metal)
Tin (post-transeetion metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (diatomic nonmetal)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline yird metal)
Lanthanum (lanthanide)
Cerium (lanthanide)
Praseodymium (lanthanide)
Neodymium (lanthanide)
Promethium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Dysprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Thulium (lanthanide)
Ytterbium (lanthanide)
Lutetium (lanthanide)
Hafnium (transeetion metal)
Tantalum (transeetion metal)
Tungsten (transeetion metal)
Rhenium (transeetion metal)
Osmium (transeetion metal)
Iridium (transeetion metal)
Platinum (transeetion metal)
Gold (transeetion metal)
Mercur (transeetion metal)
Thallium (post-transeetion metal)
Leid (post-transeetion metal)
Bismuth (post-transeetion metal)
Polonium (post-transeetion metal)
Astatine (metalloid)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline yird metal)
Actinium (actinide)
Thorium (actinide)
Protactinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Americium (actinide)
Curium (actinide)
Berkelium (actinide)
Californium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrencium (actinide)
Rutherfordium (transeetion metal)
Dubnium (transeetion metal)
Seaborgium (transeetion metal)
Bohrium (transeetion metal)
Hassium (transeetion metal)
Meitnerium (unkent chemical properties)
Darmstadtium (unkent chemical properties)
Roentgenium (unkent chemical properties)
Copernicium (transeetion metal)
Ununtrium (unkent chemical properties)
Flerovium (post-transeetion metal)
Ununpentium (unkent chemical properties)
Livermorium (unkent chemical properties)
Ununseptium (unkent chemical properties)
Ununoctium (unkent chemical properties)
He

Ne

Ar
fluorineneonsodium
Atomic nummer (Z) 10
Group, block group 18 (noble gases), p-block
Period period 2
Element category   noble gas
Staundart atomic wicht (±) (Ar) 20.1797(6)
Electron configuration [He] 2s2 2p6
per shell
2, 8
Pheesical properties
Phase gas
Meltin pynt 24.56 K ​(-248.59 °C, ​-415.46 °F)
Bylin pynt 27.104 K ​(-246.046 °C, ​-410.883 °F)
Density at stp (0 °C and 101.325 kPa) 0.9002 g/L
when liquid, at b.p. 1.207[1] g/cm3
Threeple pynt 24.556 K, ​43.37[2][3] kPa
Creetical pynt 44.4918 K, 2.7686[3] MPa
Heat o fusion 0.335 kJ/mol
Heat o vapourisation 1.71 kJ/mol
Molar heat capacity 5R/2 = 20.786 J/(mol·K)
vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 12 13 15 18 21 27
Atomic properties
Oxidation states 1[4], 0
Ionisation energies
(mair)
Covalent radius 58 pm
Van der Waals radius 154 pm
Miscellanea
Creestal structur face-centred cubic (fcc)
Face-centered cubic crystal structur for neon
Speed o soond (gas, 0 °C) 435 m/s
Thermal conductivity 49.1×103  W/(m·K)
Magnetic orderin diamagnetic[5]
Bouk modulus 654 GPa
CAS Nummer 7440-01-9
History
Prediction William Ramsay (1897)
Diskivery William Ramsay & Morris Travers[6] (1898)
First isolation William Ramsay & Morris Travers[7] (1898)
Maist stable isotopes o neon
iso NA hauf-life DM DE (MeV) DP
20Ne 90.48% 20Ne is stable wi 10 neutrons
21Ne 0.27% 21Ne is stable wi 11 neutrons
22Ne 9.25% 22Ne is stable wi 12 neutrons
· references

Neon is a chemical element wi seembol Ne an atomic nummer 10. It is in group 18 (noble gases) o the periodic table. Neon is a colourless, odorless, inert monatomic gas unner staundart condeetions, wi aboot twa-thirds the density o air. It wis discovered (alang wi krypton an xenon) in 1898 as ane o the three residual rare inert elements remainin in dry air, efter nitrogen, oxygen, argon an carbon dioxide are removed. Neon wis the seicont o these three rare gases tae be discovered, an wis immediately recognized as a new element frae its bricht reid emission spectrum. The name neon is derived frae the Greek wird, νέον, neuter singular furm o νέος [neos], meanin new. Neon is chemically inert an furms na uncharged chemical compoonds.

References[eedit | eedit soorce]

  1. Hammond, C.R. (2000). The Elements, in Handbook of Chemistry and Physics 81st edition (PDF). CRC press. p. 19. ISBN 0849304814. 
  2. 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. 
  3. 3.0 3.1 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nt ed.). CRC Press. p. 4.122. ISBN 1439855110. 
  4. "HNe". NIST Chemistry WebBook. National Institute of Standards and Technology. Retrieved 23 Januar 2013. 
  5. 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. ISBN 0-8493-0486-5. 
  6. 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. 
  7. "Neon: History". Softciências. Retrieved Februar 27, 2007.