Neon
10
Ne
Gruppe
18
Periode
2
Blokk
p
Protoner
Elektroner
Nøytroner
10
10
10
Generelle egenskaper
Atomnummer
10
Atomvekt
20,1797
Massetall
20
Kategori
Edelgasser
Farge
Fargeløs
Radioaktiv
Nei
From the Greek word neos, new
Krystallstruktur
Face Centered Cubic
Historie
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.
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.
Elektroner per energinivå
2, 8
Elektronkonfigurasjon
[He] 2s2 2p6
In a vacuum discharge tube, neon glows reddish orange
Fysikalske egenskaper
Fase
Gass
Tetthet
0,0008999 g/cm3
Smeltepunkt
24,56 K | -248,59 °C | -415,46 °F
Kokepunkt
27,07 K | -246,08 °C | -410,94 °F
Smeltevarme
0,34 kJ/mol
Fordampningsvarme
1,75 kJ/mol
Spesifikk varmekapasitet
1,03 J/g·K
Forekomst i jordskorpa
3×10-7%
Forekomst i universet
0,13%
CAS Number
7440-01-9
PubChem CID Number
23935
Atomegenskaper
Atomradius
38 pm
Kovalent radius
58 pm
Elektronegativitet
-
Ioniseringsenergi
21,5645 eV
Molart volum
16,7 cm3/mol
Termisk ledningsevne
0,000493 W/cm·K
Oksidasjonstilstander
0
Bruksområder
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.
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
Isotoper
Stabile isotoper
20Ne, 21Ne, 22NeUstabile isotoper
16Ne, 17Ne, 18Ne, 19Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne