Talk:Nitrogen/Archive 2

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Archive 1 Archive 2

Density correction

You have the density listed as 1.251 g/L. I believe it should be 1.251 kg/L. Bobonumba1 (talk) 20:49, 15 December 2016 (UTC)

No. It's a gas at standard temperature and pressure and the density is correct. Meters (talk) 21:17, 15 December 2016 (UTC)

Semi-protected edit request on 24 May 2017

Spelling: Correct 'amtmosphere' in Applications / Gas in the sentence: "The gas is mostly used as an inert amtmosphere whenever..." 27.59.25.0 (talk) 12:08, 24 May 2017 (UTC)

 Done Thank you! Double sharp (talk) 12:29, 24 May 2017 (UTC)

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MO diagram...

The molecular orbital diagram here in the allotropes section([[1]]) is quite different from the one for the same molecule given here([[2]]. The bonding 2p pi orbitals are lower in energy compared to the bonding 2p sigma orbital as per the latter while the one in this article shows the opposite picture. As my understanding of molecular orbital theory is quite limited, i am not sure which one is correct. Although what i have learnt till now tells me that the latter is correct, i think it would be best to let someone with a better understanding of the theory to have a look and suggest an edit... — Preceding unsigned comment added by 175.100.159.88 (talk) 04:45, 20 March 2018 (UTC)

The scale is somewhat exaggerated: the energies of the 2sσ, 2pσ, and 2pπ orbitals are actually very close. I redrew the MO diagram here from Clayden, Greeves, and Warren (p. 94), but they left out this detail for simplification (since it wasn't their focus, although in that case I would've thought it sounder to use O2 as the example instead). The bonding 2pσ orbital should indeed be higher in energy than the bonding 2pπ orbitals because the 2s and 2p orbitals are still similar enough in energy at N2 to have a significant bonding interaction, decreasing the energy of the 2sσ orbital and increasing that of the 2pσ orbital (see ChemWiki for a more complete explanation). I have replaced the diagram and tagged the old one for deletion, as it is wrong. Thank you for alerting me to this! Double sharp (talk) 07:21, 20 March 2018 (UTC)

New finding about Nitrogen

Accodirding to this article [3] Nitrogen is found in metallic fluid in the Earth's core. — Preceding unsigned comment added by 201.234.55.22 (talk) 13:56, 10 July 2018 (UTC)

Untitled

Article changed over to new Wikipedia:WikiProject Elements format by David M, and Malcolm Farmer. Elementbox converted 12:08, 23 Jun 2005 by Femto (previous revision was that of 02:15, 18 Jun 2005).

This article seems to omit information about Nitrogen in the most common form we encounter it - molecular nitrogen gas (N2) in the atmosphere, molecular mass ~28 etc - confusing for people comparing gases… — Preceding unsigned comment added by 78.147.47.6 (talk) 12:55, 15 October 2018 (UTC)

N2 is covered in many places in the article, for example the "Allotropes" section, and all the information about applications and precautions focuses on it (or else we should have a ridiculously long article given the great variety of N compounds). Obtaining properties like molecular mass from those given in the infobox is at most a matter of simple calculation (the kind that should have been taught in beginning chemistry classes). Double sharp (talk) 05:11, 18 October 2018 (UTC)

Information Sources

Some of the text in this entry was rewritten from Los Alamos National Laboratory - Nitrogen. Additional text was taken directly from USGS Nitrogen Statistics and Information,USGS Periodic Table - Nitrogen, from the Elements database 20001107 (via dict.org), Webster's Revised Unabridged Dictionary (1913) (via dict.org) and WordNet (r) 1.7 (via dict.org). Data for the table was obtained from the sources listed on the main page and Wikipedia:WikiProject Elements but was reformatted and converted into SI units.

Can some one please help with this edit

I was looking up the density for Nitrogen in the side table and noticed that the referenced website page no longer exists. the website itself doenst seem to be a reliable sources anyways. I can not figure out how to edit the this side bar....

Can some one please help me change update the density to 1.2506 kg/m^3 (at STP). kg/m^3 is easier to work with than g/L, also the cited website is a widely accepted source for engineers like myself:

https://www.engineeringtoolbox.com/gas-density-d_158.html


also the critical point it wrong. Here is the link to the wiki's critical point page: https://en.wikipedia.org/wiki/Critical_point_(thermodynamics)

I have other journal papers that also cite the critical point, but I have special access to them so...

SuperSonicFlow (talk) 06:49, 27 January 2019 (UTC)SuperSonicFlow

@SuperSonicFlow: I have made the changes (there's also a more accurate critical point given at Critical points of the elements (data page), so I used that one instead). Double sharp (talk) 15:21, 27 January 2019 (UTC)

Double sharp Thanks, i kept referencing for my project and was driving me nuts why my code was adding up! SuperSonicFlow (talk) 19:20, 27 January 2019 (UTC)SuperSonicFlow

Longest nitrogen chain and electron affinity

Greenwood and Earnshaw give 8 N atoms. Apparently now it is 11. However I guess the exact figure and exact compound does not really matter since (1) it is all small potatoes compared to thousands of carbon atoms and (2) something that G&E devote literally one line to is probably not worth including. So I deleted the exact number and compound.

As for electron affinity; while this was initially mentioned, it was not cited, so I removed it. It is a real thing, I would not object to its return with a citation, but it should perhaps be noted that G&E make no bones about it being negative for N, which makes me wary about its actual importance. Just from the UK high school syllabus you can see electron affinity becomes important for calculations when you are trying to make an ionic compound only, and in that case it doesn't really matter that it goes a bit negative (never mind qualms about whether they really are significantly negative in reliable sources) because the lattice energy will overcome it. The second electron affinity for oxygen and sulfur is also negative, but that never stopped ionic oxides and sulfides from existing. Double sharp (talk) 04:41, 23 August 2020 (UTC)

+6 oxidation state of nitrogen

In this article, the author mention about the very unstable existence of +6 oxidation state of nitrogen but didn't cite them and I couldn't find any articles about it. Can anyone help me cite them? Ilys6 (talk) 06:31, 20 July 2021 (UTC)

Physical Properties

The density is given at STP (Standard Temperature and Pressure), which is defined as 0°C and 100.0 kPa since 1982. However, the note next to the density N2 specification ("0°C and 1013 mbar") seems to loosely imply that the pre-1982 definition of STP is used. The density value refers to The Engineering Toolbox, which explicitly uses the pre-1982 STP definition. The value of the N2 density specified on the Wikipedia page does indeed seem to pertain to the pre-1982 STP definition. Using the current STP definition, the correct value would therefore be closer 1.249, but I don't know the exact value.

I would suggest to convert the density number to conform with the post-1982 STP definition, and change the reference to read "derived from The Engineering Toolbox" or similar.

Mbrennwa (talk) 06:27, 4 July 2022 (UTC)

Cryogenic History

It is worth mentioning that Nitrogen was first liquefied in 1883 by Wrobleski and Olzewski. (Taken from "Cryogenic Technology" edited by Robert W. Vance, published by John Wiley & sons inc. 1963)

Scheele

Scheele discovered nitrogen in the same year as Rutherford.

"Planet" Pluto

It won't let me edit the page but someone with privileges to edit it might want to just have it say "Pluto" instead of "the planet Pluto". No need to have anything unnecessarily argumentative put into it. Whether you think it should count as a planet or not, you should be fine with it just being referred to as Pluto. This is in the image on Pluto to the right of the section on solid nitrogen.

67.168.219.238 (talk) 01:36, 9 August 2022 (UTC)

 Done It's against the IAU convention anyway (see Dwarf planet). –LaundryPizza03 (dc̄) 01:44, 9 August 2022 (UTC)

"Mephitic" listed at Redirects for discussion

An editor has identified a potential problem with the redirect Mephitic and has thus listed it for discussion. This discussion will occur at Wikipedia:Redirects for discussion/Log/2022 September 30#Mephitic until a consensus is reached, and readers of this page are welcome to contribute to the discussion. 1234qwer1234qwer4 14:06, 30 September 2022 (UTC)

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