Talk:Noble gas

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Featured article Noble gas is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so.
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Radon radius[edit]

Why doesn't Radon have an atomic radius listed in the table? —Preceding unsigned comment added by Stepheng3 (talkcontribs)

It wasn't available in the source we used. Perhaps no one has measured it because radon is highly radioactive. If you know of a source for the radius that we could use, please let us know. --Itub (talk) 21:06, 10 July 2008 (UTC)
Calculated as 120 pm according to Radon, which matches the cited value in the Atomic radius#Calculated atomic radius table. Some of the Atomic radius values differ from those in the elements' own pages, and also differ from the Noble gas#Physical and atomic properties table. At least we have cites, so "the sources disagree" instead of "Wikipedia editors are morons and/or vandalism makes WP useless." DMacks (talk) 22:13, 10 July 2008 (UTC)

Why are they called 'Noble'?[edit]

Why are theses gases called 'Noble'? What makes them so noble? —Preceding unsigned comment added by (talk) 17:42, 18 May 2009 (UTC)

Well, the gases are referred to as noble gases as they rarely form compunds and the compounds that they form are rare. They are considered more stable compared to other elements and hence have claimed the title of noble gases. Suryamp (talk) 11:20, 12 March 2010 (UTC)

In 1962 a scientist prepared the first chemical compound of xenon. so scientist thought that they are no longer inert. they are by they are given the name "noble gas". which means less reactive. —Preceding unsigned comment added by (talk) 11:36, 8 November 2010 (UTC)

Standard conditions[edit]

The introductory paragraph refers to the properties of noble gases "under standard conditions" without explanation. Is this a reference to standard temperature and pressure? If so it should be made a wikilink to Standard conditions for temperature and pressure.--DJIndica (talk) 12:04, 18 August 2008 (UTC)

Most of texts I've seen merely say "Helium is an odourless colorless ... gas" ; and so does with the other noble gases' definitions. Without any further information provided, an article reader, with little knowledge in chemistry like me, could assume from use of present simple tense that the standard conditions mean the common "Room Temperature" and "1 ATM." Still, I'm not certain about the accurate fact.Eakka (talk) 00:08, 22 August 2008 (UTC)


This is an interesting article: One or Several Pioneers? The Discovery of Noble-Gas Compounds doi:10.1002/anie.198804791 It turns out that Rudolf Hoppe discovered XeF2 nearly at the same time as Bartlett discovered xenon hexafluoroplatinate, but his publication was a few weeks later, and now relatively few people remember his contribution. --Itub (talk) 15:46, 26 November 2008 (UTC)

Clathrate hydrates[edit]

Neon (radius:38pm) is only slightly larger than helium (radius:31pm) atom, and much smaller than heavier noble gas atoms like argon (radius:71pm). It may not be able to form a clathrate with ice. Anoop.m (talk) 15:33, 2 July 2009 (UTC)

Well, the reference cited makes quite an specific claim that such a clathrate exists, doesn't it? --Itub (talk) 01:18, 3 July 2009 (UTC)
No clathrates have been found for helium and neon is aref for it while doi:10.1039/X9909209 says there is a high pressure clathrate.--Stone (talk) 15:53, 2 July 2009 (UTC)
I'd say that a journal article specifically reporting the existence of the clathrate beats a general, introductory textbook. --Itub (talk) 12:46, 9 July 2009 (UTC)

First noble gas discovered?[edit]

The "History" section claims:

Pierre Janssen and Joseph Norman Lockyer were the first to discover a noble gas on August 18, 1868 while looking at the chromosphere of the Sun, and named it helium after the Greek word for the Sun.

Were they able to show that helium was actually a noble gas? If not, I would not call them the "first to discover a noble gas". --Roentgenium111 (talk) 21:43, 23 July 2009 (UTC)

They discovered helium. Helium is a noble gas. Therefore, they discovered a noble gas (even if the concept of "noble gas" didn't exist yet). --Itub (talk) 12:03, 28 July 2009 (UTC)
Formally, yes. But I would reword the sentence to avoid confusion. --Roentgenium111 (talk) 16:09, 28 July 2009 (UTC)
Yes check.svg Done --Roentgenium111 (talk) 15:40, 11 May 2010 (UTC)

Group 18 elements[edit]

I converted the link to this redirect to bold, with a disclaimer on the merit of that change; I know little about this topic, that is why I am here. The first sentence in the second paragraph of the lead section seems off, more insistent than factual: "For the first six periods of the periodic table, the noble gases are exactly the members of group 18 of the periodic table". cygnis insignis 14:16, 24 November 2011 (UTC)

Edelgas coined in 1898[edit]

Was the word Edelgas coined in 1898 or in 1896 like this article suggests doi:10.1002/cber.189602902105 --Stone (talk) 09:36, 26 February 2012 (UTC)

Electron configuration[edit]

Should we not use Molecular Orbital diagrams to show the bonding and anti-bonding orbitals cancel out, rather than showing the outdated Bohr model? Ffgamera - My page! · Talk to me!· Contribs 03:39, 18 March 2012 (UTC)

Can you clarify? Where? The article seems to use MO diagrams for molecules and Bohr model for atoms. Materialscientist (talk) 03:58, 18 March 2012 (UTC)
Are you talking about molecular electron configuration?Jasper Deng (talk) 04:37, 18 March 2012 (UTC)

File:Glowing noble gases.jpg to appear as POTD soon[edit]

Hello! This is a note to let the editors of this article know that File:Glowing noble gases.jpg will be appearing as picture of the day on May 7, 2012. You can view and edit the POTD blurb at Template:POTD/2012-05-07. If this article needs any attention or maintenance, it would be preferable if that could be done before its appearance on the Main Page so Wikipedia doesn't look bad. :) Thanks! howcheng {chat} 04:07, 6 May 2012 (UTC)

Picture of the day
Glowing noble gases

Vials of electric glow discharge of five of the six naturally occurring noble gases (left to right: helium, neon, argon, krypton, xenonradon is not pictured). Under standard conditions, the noble gases are odorless, colorless, monatomic gases, with very low chemical reactivity. They have several important applications in industries such as lighting, welding, and space exploration.

Photos: Jurii
ArchiveMore featured pictures...

These are not the true colours of the glowing noble gases. The pictures are most likely contaminated. Note the difference between these and Alchemist-hp's version. Double sharp (talk) 06:45, 5 August 2012 (UTC)
Only helium is noticeably different to my eye (but I did not compare to published emission-spectrum data). DMacks (talk) 15:55, 5 August 2012 (UTC)

Mendeleev's Reaction to the News of the Argon Discovery[edit]

When Mendeleev first heard of the discovery of a proposed new element (Argon) his reaction was that this was probably a form on Nitrogen, N3, analagous to Ozone, O3. Presumably it would have been called Trinitrogen. Later, however, he abandoned this idea and accepted that Argon was indeed a previously unknown element. (talk) 09:49, 26 December 2012 (UTC)

neon occurrence[edit]

Hello! I noticed that there's nothing about neon occurrence on earth's atmosfere in the proper section. Since this is a featured article and neon's article don't have sources about this I made a research and found this article useful to improvements. Is anyone able to help me include this here? Regards, OTAVIO1981 (talk) 10:50, 26 May 2014 (UTC)

External links modified[edit]

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Atomic Numbers[edit]

2, 10, 18, 36, 54, 86, 118, [172], [226], then how do I go after that? Is there a formula or something? Note: I got 226 because each gap seems to be repeated: 8, 8, 18, 18, 32, 32, [54], [54] Is there a formula for this either? 32ieww (talk) 06:03, 23 November 2016 (UTC) 32ieww (talk) 06:03, 23 November 2016 (UTC)

It does not go on after 172. The periodic table ends at Z = 173, when the 1s shell dives into the negative continuum. Note that the electron configurations and chemistry of the elements beyond Z = 122 are very tentative because there have so far not been complete predictions – normally already problematic, but here even more so because of the massive competition between 5g, 6f, 7d, and 8p orbitals (and later 9s and 9p). Double sharp (talk) 06:14, 23 November 2016 (UTC)