Neon

10
Ne
Gruppe
18
Periode
2
Block
p
Protonen
Elektronen
Neutronen
10
10
10
Generelle Eigenschaften
Ordnungszahl
10
Atommasse
20,1797
Massenzahl
20
Kategorie
Edelgase
Farbe
Farblos
Radioaktiv
Nein
Aus dem Griechischen neos (neu)
Kristallstruktur
Kubisch flächenzentriert
Geschichte
Neon was discovered in 1898 by the British chemists Sir William Ramsay and Morris W. Travers in London.

It was discovered when Ramsay chilled a sample of air until it became a liquid, then warmed the liquid and captured the gases as they boiled off.

After 1902, Georges Claude's company, Air Liquide, was producing industrial quantities of neon as a byproduct of his air liquefaction business.
Elektronen pro Schale
2, 8
Elektronenkonfiguration
[He] 2s2 2p6
Ne
In a vacuum discharge tube, neon glows reddish orange
Physikalische Eigenschaften
Aggregatzustand
Gasförmig
Dichte
0,0008999 g/cm3
Schmelzpunkt
24,56 K | -248,59 °C | -415,46 °F
Siedepunkt
27,07 K | -246,08 °C | -410,94 °F
Schmelzwärme
0,34 kJ/mol
Verdampfungswärme
1,75 kJ/mol
Spezifische Wärmekapazität
1,03 J/g·K
Häufigkeit in der Erdkruste
3×10-7%
Häufigkeit im Universum
0,13%
Vial
Danksagungen für Bilder: Images-of-elements
Vial of glowing ultrapure neon
CAS-Nummer
7440-01-9
PubChem CID Number
23935
Atomeigenschaften
Atomradius
38 pm
Kovalenter Radius
58 pm
Elektronegativität
-
Ionisierungsenergie
21,5645 eV
Molares Volumen
16,7 cm3/mol
Wärmeleitfähigkeit
0,000493 W/cm·K
Oxidationszustände
0
Anwendung
Neon is often used in brightly lit advertising signs.

It is also used in vacuum tubes, high-voltage indicators, lightning arrestors, wave meter tubes, television tubes, and helium-neon lasers.

Liquid neon is used as a cryogenic refrigerant.
Neon is not known to be toxic
Isotope
Stabile Isotope
20Ne, 21Ne, 22Ne
Instabile Isotope
16Ne, 17Ne, 18Ne, 19Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne