Neon
10
Ne
Ryhmä
18
Jakso
2
Lohko
p
Protonia
Elektronit
Neutronia
10
10
10
Yleiset ominaisuudet
Järjestysluku
10
Atomipaino
20,1797
Massaluku
20
Luokka
Jalokaasut
Väri
Väritön
Radioaktiivisuus
Ei
From the Greek word neos, new
Kiderakenne
Pintakeskinen kuutiollinen
Historia
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.
Elektroneja elektronikuorilla
2, 8
Orbitaalirakenne
[He] 2s2 2p6
In a vacuum discharge tube, neon glows reddish orange
Fyysiset ominaisuudet
Olomuoto
Kaasu
Tiheys
0,0008999 g/cm3
Sulamispiste
24,56 K | -248,59 °C | -415,46 °F
Kiehumispiste
27,07 K | -246,08 °C | -410,94 °F
Sulamislämpö
0,34 kJ/mol
Höyrystymislämpö
1,75 kJ/mol
Ominaislämpökapasiteetti
1,03 J/g·K
Esiintyvyys maankuoressa
3×10-7%
Esiintyvyys maailmankaikkeudessa
0,13%
CAS-numero
7440-01-9
PubChem CID-numero
23935
Atomiominaisuudet
Atomisäde
38 pm
Kovalenttisäde
58 pm
Elektronegatiivisuus
-
Ionisoitumispotentiaali
21,5645 eV
Moolitilavuus
16,7 cm3/mol
Lämmönjohtavuus
0,000493 W/cm·K
Hapetusluvut
0
Käyttö
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
Isotooppi
Vakaat isotoopit
20Ne, 21Ne, 22NeEpävakaat isotoopit
16Ne, 17Ne, 18Ne, 19Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne