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Hiby, Julius W. (1939). "Massenspektrographische Untersuchungen an Wasserstoff- und Heliumkanalstrahlen (H3+, H2-, HeH+, HeD+, He-)". Annalen der Physik. 426 (5): 473–487. doi: 10.1002/andp.19394260506. First 1986? -- Stone ( talk) 18:07, 21 June 2008 (UTC)
{{
cite journal}}
: CS1 maint: multiple names: authors list (
link). Apparently "first studied by Wolfgang Ketterle in 1986" refers to the first spectroscopic studies of the neutral helium hydride. I found these two papers by Ketterle: W. Ketterle, H. Figger, and H. Walther (1985). "Emission spectra of bound helium hydride". Phys. Rev. Lett. 55: 2941–2944.
doi:
10.1103/PhysRevLett.55.2941.{{
cite journal}}
: CS1 maint: multiple names: authors list (
link); W Ketterle, A Dodhy, H Walther (1986). "Bound—free emission of the helium hydride molecule". Chemical Physics Letters. 129 (1): 76–78.
doi:
10.1016/0009-2614(86)80172-5.{{
cite journal}}
: CS1 maint: multiple names: authors list (
link). --
Itub (
talk) 15:47, 23 June 2008 (UTC)After a quick literature search, I'm left with the impression that helium hydride ion and helium hydride molecular ion are used much more often than hydrohelium ion. (Actually, the most common is HeH+, but I'd rather use words.) Should we rename the article?
The current image is misleading - HHe+ is isoelectronic with H2, and therefore the two atoms in the cation should have identical size. Whoop whoop pull up Bitching Betty | Averted crashes 02:12, 28 December 2011 (UTC)
The article is very keen on not referring to the helium hydride ion as a molecule, which is in line with IUPAC Gold book's definition ("An electrically neutral entity..."). The term compound is also avoided, though I could not find a similar definition, for me compounds are also electrically neutral, and thus I consider helium hydride ion to be a polyatomic ion, not a compound. However, the article is categorized in "helium compounds", and the navbox also describes this ion as a compound, while for neon it says no compounds have been identified yet – although neon also forms heteronuclear polyatomic ions. I believe this should be clarified and a uniform terminology be used. In my opinion these are not compounds, but I would be very much interested in others view. Szaszicska ( talk) 17:39, 28 June 2013 (UTC)
Hello fellow Wikipedians,
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What will be the pKa values of HNe+ and HAr+ Anoop Manakkalath ( talk) 08:27, 29 November 2018 (UTC)
The article has the following computation of the pH:
HeH+(g) | → | H+(g) | + He(g) | +178 kJ/mol | [2] |
HeH+(aq) | → | HeH+(g) | +973 kJ/mol | (a) | |
H+(g) | → | H+(aq) | −1530 kJ/mol | ||
He(g) | → | He(aq) | +19 kJ/mol | (b) | |
HeH+(aq) | → | H+(aq) | + He(aq) | −360 kJ/mol |
There are no sources for this computation, and it contains two rather dubious estimations, including one (a) that is more than twice the magnitude of the final result. It seems to be original speculation. If there is no reliable source, should it be removed? -- Jorge Stolfi ( talk) 12:49, 21 April 2019 (UTC)
The article says The helium hydride ion is formed during the decay of tritium in the molecule HT or tritium molecule T2. What about the deuterium-tritium molecule DT (2H−3H)? I suppose that it yields 2H−3He+ too, right? -- Jorge Stolfi ( talk) 20:02, 21 April 2019 (UTC)
Comparing with dihydrogen cation [H2+ and trihydrogen cation [H3+, shouldn't this be helium hydrogen cation or helium hydrogen ion?
And consider the ion [D2H]+ isotopologue of [H3+ (actually used for something: [1]). Should that be "hydrogen deuterium deuteride ion", "dideuterium hydride ion", "hydrogen dideuteride ion", "deuterium hydrogendeuteride ion", "deuterium deteriumhydride ion" -- or just "dideuterium hydrogen ion"? -- Jorge Stolfi ( talk) 00:48, 23 April 2019 (UTC)
References
According to Alan Guth's book "The Inflationary Universe", around 1/3 of Lithium was produced in the Big Bang. So H / He was'nt the only early chemistry players, as this article seems to indicate. — Preceding unsigned comment added by BenSWiki ( talk • contribs) 02:25, 24 April 2019 (UTC)
How can HeH+ be " isoelectronic" with H2 if it has one fewer electrons? —DIV ( 137.111.13.48 ( talk) 02:36, 24 April 2019 (UTC))
The article claims that HeH(+) was the first compound to exist in our universe. Well, yes and no; mostly no. If I can use an analogy, there was this 'pea soup' of H, He, and Li and all sorts of combinations of them. This soup was too hot for any of the molecular ions or molecules to exist for more than a "split-second". If we think of the expansion of the Universe (near Recombination (a handful of million to several dozen million years after the Big Bang, z >100)) as draining this pea soup, cooling and reducing its density, then the first island to emerge from the soup was likely HeH(+). That doesn't mean the other species aren't there, it just means they're still 'under' the soup and so not visible. Likewise, the first neutral element was He, and of course the first neutral molecule was H2. The *real* reason I looked into this (see Lepp et al., 2002) is because I doubted that they claimed HeH(+) is a compound. It is not, imho. They don't use the term, compound, at all. A compound must be electrically neutral. Good luck finding that as part of any definition! But if someone can point to an authoritative source which either states ions (without counter ions) are chemical compounds OR said source gives an ion (unbalanced electrically) as an example of a chemical compound, then at least the editors will be justified to make such a (incorrect) claim. 98.21.212.117 ( talk) 00:19, 23 May 2023 (UTC)
![]() | A news item involving Helium hydride ion was featured on Wikipedia's Main Page in the In the news section on 20 April 2019. | ![]() |
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
|
![]() |
Daily pageviews of this article
A graph should have been displayed here but
graphs are temporarily disabled. Until they are enabled again, visit the interactive graph at
pageviews.wmcloud.org |
Hiby, Julius W. (1939). "Massenspektrographische Untersuchungen an Wasserstoff- und Heliumkanalstrahlen (H3+, H2-, HeH+, HeD+, He-)". Annalen der Physik. 426 (5): 473–487. doi: 10.1002/andp.19394260506. First 1986? -- Stone ( talk) 18:07, 21 June 2008 (UTC)
{{
cite journal}}
: CS1 maint: multiple names: authors list (
link). Apparently "first studied by Wolfgang Ketterle in 1986" refers to the first spectroscopic studies of the neutral helium hydride. I found these two papers by Ketterle: W. Ketterle, H. Figger, and H. Walther (1985). "Emission spectra of bound helium hydride". Phys. Rev. Lett. 55: 2941–2944.
doi:
10.1103/PhysRevLett.55.2941.{{
cite journal}}
: CS1 maint: multiple names: authors list (
link); W Ketterle, A Dodhy, H Walther (1986). "Bound—free emission of the helium hydride molecule". Chemical Physics Letters. 129 (1): 76–78.
doi:
10.1016/0009-2614(86)80172-5.{{
cite journal}}
: CS1 maint: multiple names: authors list (
link). --
Itub (
talk) 15:47, 23 June 2008 (UTC)After a quick literature search, I'm left with the impression that helium hydride ion and helium hydride molecular ion are used much more often than hydrohelium ion. (Actually, the most common is HeH+, but I'd rather use words.) Should we rename the article?
The current image is misleading - HHe+ is isoelectronic with H2, and therefore the two atoms in the cation should have identical size. Whoop whoop pull up Bitching Betty | Averted crashes 02:12, 28 December 2011 (UTC)
The article is very keen on not referring to the helium hydride ion as a molecule, which is in line with IUPAC Gold book's definition ("An electrically neutral entity..."). The term compound is also avoided, though I could not find a similar definition, for me compounds are also electrically neutral, and thus I consider helium hydride ion to be a polyatomic ion, not a compound. However, the article is categorized in "helium compounds", and the navbox also describes this ion as a compound, while for neon it says no compounds have been identified yet – although neon also forms heteronuclear polyatomic ions. I believe this should be clarified and a uniform terminology be used. In my opinion these are not compounds, but I would be very much interested in others view. Szaszicska ( talk) 17:39, 28 June 2013 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Helium hydride ion. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
An editor has reviewed this edit and fixed any errors that were found.
Cheers.— InternetArchiveBot ( Report bug) 17:26, 1 November 2017 (UTC)
What will be the pKa values of HNe+ and HAr+ Anoop Manakkalath ( talk) 08:27, 29 November 2018 (UTC)
The article has the following computation of the pH:
HeH+(g) | → | H+(g) | + He(g) | +178 kJ/mol | [2] |
HeH+(aq) | → | HeH+(g) | +973 kJ/mol | (a) | |
H+(g) | → | H+(aq) | −1530 kJ/mol | ||
He(g) | → | He(aq) | +19 kJ/mol | (b) | |
HeH+(aq) | → | H+(aq) | + He(aq) | −360 kJ/mol |
There are no sources for this computation, and it contains two rather dubious estimations, including one (a) that is more than twice the magnitude of the final result. It seems to be original speculation. If there is no reliable source, should it be removed? -- Jorge Stolfi ( talk) 12:49, 21 April 2019 (UTC)
The article says The helium hydride ion is formed during the decay of tritium in the molecule HT or tritium molecule T2. What about the deuterium-tritium molecule DT (2H−3H)? I suppose that it yields 2H−3He+ too, right? -- Jorge Stolfi ( talk) 20:02, 21 April 2019 (UTC)
Comparing with dihydrogen cation [H2+ and trihydrogen cation [H3+, shouldn't this be helium hydrogen cation or helium hydrogen ion?
And consider the ion [D2H]+ isotopologue of [H3+ (actually used for something: [1]). Should that be "hydrogen deuterium deuteride ion", "dideuterium hydride ion", "hydrogen dideuteride ion", "deuterium hydrogendeuteride ion", "deuterium deteriumhydride ion" -- or just "dideuterium hydrogen ion"? -- Jorge Stolfi ( talk) 00:48, 23 April 2019 (UTC)
References
According to Alan Guth's book "The Inflationary Universe", around 1/3 of Lithium was produced in the Big Bang. So H / He was'nt the only early chemistry players, as this article seems to indicate. — Preceding unsigned comment added by BenSWiki ( talk • contribs) 02:25, 24 April 2019 (UTC)
How can HeH+ be " isoelectronic" with H2 if it has one fewer electrons? —DIV ( 137.111.13.48 ( talk) 02:36, 24 April 2019 (UTC))
The article claims that HeH(+) was the first compound to exist in our universe. Well, yes and no; mostly no. If I can use an analogy, there was this 'pea soup' of H, He, and Li and all sorts of combinations of them. This soup was too hot for any of the molecular ions or molecules to exist for more than a "split-second". If we think of the expansion of the Universe (near Recombination (a handful of million to several dozen million years after the Big Bang, z >100)) as draining this pea soup, cooling and reducing its density, then the first island to emerge from the soup was likely HeH(+). That doesn't mean the other species aren't there, it just means they're still 'under' the soup and so not visible. Likewise, the first neutral element was He, and of course the first neutral molecule was H2. The *real* reason I looked into this (see Lepp et al., 2002) is because I doubted that they claimed HeH(+) is a compound. It is not, imho. They don't use the term, compound, at all. A compound must be electrically neutral. Good luck finding that as part of any definition! But if someone can point to an authoritative source which either states ions (without counter ions) are chemical compounds OR said source gives an ion (unbalanced electrically) as an example of a chemical compound, then at least the editors will be justified to make such a (incorrect) claim. 98.21.212.117 ( talk) 00:19, 23 May 2023 (UTC)