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Helium 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.

Helium is part of the Period 1 elements series, a good topic. This is identified as among the best series of articles produced by the Wikipedia community. If you can update or improve it, please do so.

This article appeared on Wikipedia's Main Page as Today's featured article on May 31, 2004.

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3 HE, In Mineral form

Location and Abundance of 3HE since 2020,advanced usages for Propulsion in Spaceflight feasibly. (Theory). 159.235.169.232 (talk) 03:47, 7 October 2022 (UTC)[reply]

Helium trimer? DePiep (talk) 06:06, 7 October 2022 (UTC)[reply]

I suspect ³He. Our article there does mention hypothetical use as an energy source. DMacks (talk) 06:50, 7 October 2022 (UTC)[reply]

Of course. Should have seen that. DePiep (talk) 07:13, 7 October 2022 (UTC)[reply]

Conservation advocates

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There is a ref poking out in the "Conservation advocates" section. That is not how it is done!!! Also. no point having an acrynym if it is not going to ne used.. 103.21.175.235 (talk) 03:31, 31 October 2022 (UTC)[reply]

Done —Sirdog (talk) 23:23, 31 October 2022 (UTC)[reply]

Covalent radius

How does the concept of covalent radius make sense for helium, as it doesn't normally bond with anything? If it is based on a measurement of a bond in some actual helium compound, what is the compound? It seems like a reference is needed in the infobox.CountMacula (talk) 15:59, 8 November 2022 (UTC)[reply]

Hmm. In Covalent radius it says: Tabulated values of covalent radii are either average or idealized values, which nevertheless show a certain transferability between different situations, which makes them useful. I suspect the idealized values part allows it. Note that on Covalent radius it has two (very) different values for helium. I suspect that not putting one on this page would be a good choice. Gah4 (talk) 18:30, 8 November 2022 (UTC)[reply]

There are known bound ions containing helium, see Helium compounds#Known ions. I don't think it's too much of a stretch to consider HeH⁺ to contain a H–He covalent bond, so these values make sense even without idealisation. The bigger problem to my mind is that the two values are very different, as Gah4 says. Double sharp (talk) 17:00, 29 December 2023 (UTC)[reply]

Semi-protected edit request on 6 September 2023

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Where they say that large amounts of helium-4 are made in stars, add to it "and a little more from alpha decaying radioactive materials" or some variation thereof. RealNamesAreFineZ.E.O (talk) 17:06, 6 September 2023 (UTC)[reply]

Not done: please provide reliable sources that support the change you want to be made. M.Bitton (talk) 21:44, 6 September 2023 (UTC)[reply]

@@ Line 70: / Line 70: @@
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-== ''condense hydrogen and oxygen to make rocket fuel'' ==
-Definitely oxygen can be liquified without liquid helium, usually fractional distillation of liquid air. Hydrogen can be liquified without helium also, but maybe it is easier with helium. [[User:Gah4|Gah4]] ([[User talk:Gah4|talk]]) 01:19, 11 February 2022 (UTC)
 == 3 HE,  In Mineral form ==