„Nemesgázok” változatai közötti eltérés

|align="left"|Naprendszerben (minden szilíciumatomra db)<ref>{{cite journal| doi = 10.1086/375492| last = Lodders| first = Katharina| date = July 10, 2003| title = Solar System Abundances and Condensation Temperatures of the Elements| journal = The Astrophysical Journal| publisher = The American Astronomical Society| volume = 591| issue = 2| pages = 1220–1247| url = http://weft.astro.washington.edu/courses/astro557/LODDERS.pdf| format = PDF| bibcode = 2003ApJ...591.1220L| ref = harv}}</ref>|| 2343 || 2.,148 || 0.,1025 || 5.,515 × 10⁻⁵ || 5.,391 × 10⁻⁶ || –

|align="left"|A Föld légkörében (térfogatarány ppm-ben)<ref>{{cite web|accessdate=2008-06-01|url=http://www.srh.noaa.gov/jetstream//atmos/atmos_intro.htm|title=The Atmosphere |publisher=[[National Weather Service]]}}</ref> || 5.,20 || 18.,20 || 9340.,00 || 1.,10 || 0.,09 || (0.,06–18) × 10⁻¹⁹<ref name=ullmann/>

|align="left"|Magmás kőzetekben (tömegarány ppm-ben)<ref name="greenwood891"/> || 3 × 10⁻³ || 7 × 10⁻⁵ || 4 × 10⁻² || – || – || 1.,7 × 10⁻¹⁰

|align=left| Hélium (ipari célra) || 4.,20–4.,90

|align=left| Hélium (laboratóriumi célra) || 22.,30–44.,90

|align=left| Argon || 2.,70–8.,50