Talk:Rubidium

Good articleRubidium has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it.
Article milestones
DateProcessResult
March 24, 2011Good article nomineeListed
December 21, 2016Good topic candidatePromoted
April 6, 2026Good topic removal candidateDemoted
Current status: Good article

Comparative reactivity

Latest comment: 1 year ago15 comments4 people in discussion

While I agree that caesium is more reactive just by looking at the periodic table, the Brittanica reference may be taking a note from experimental evidence suggesting caesium is less reactive than rubidium, based off the idea that a same-size chunk of both will be more reactive for rubidium when thrown into a body of water due to a higher quantity of rubidium in the sample. Not a great thing to base the article on but could be something to consider. Reconrabbit 16:51, 11 September 2024 (UTC)Reply

I deleted the sentence:
  • As with potassium (which is slightly less reactive) and caesium (which is slightly more reactive), this reaction is usually vigorous enough to ignite the hydrogen gas it produces.
with no source.
We need to find a secondary source with this info. Johnjbarton (talk) 17:17, 11 September 2024 (UTC)Reply
This is so completely obvious that just about everything covering elementary chemistry is going to say it. So I stuck in a webpage from Stanford University.
(Also, the end of the paragraph literally had a citation to Ohly, and those are generally understood to cover more than one sentence. Those sentences were indeed in the article back when it passed GA in 2011. I would suspect from that that Ohly mentions it, but unfortunately Google Books only offers snippets of that source, and didn't allow me to confirm or disconfirm my hypothesis.) Double sharp (talk) 17:44, 11 September 2024 (UTC)Reply
@Double sharp Assertions in edit summaries are not sources. The Stanford site says
  • Alkali metals react with water to produce heat, hydrogen gas, and the corresponding metal hydroxide. The heat produced by this reaction may ignite the hydrogen or the metal itself, resulting in a fire or an explosion. The heavier alkali metals will react more violently with water.
It does not talk about Potassium. I think you are correct, but that's beside the point. Johnjbarton (talk) 18:10, 11 September 2024 (UTC)Reply
This reference suggests that the trends in reactivity of alkali metals in water are related to kinetics rather than thermodynamics, and thus may not all that simple.
Johnjbarton (talk) 18:30, 11 September 2024 (UTC)Reply
would it be ok to just add this back
  • As with potassium and caesium , this reaction is usually vigorous enough to ignite the hydrogen gas it produces. so it doesn't mention which is more or less reactive avoiding any conflict
Sanad real (talk) 20:59, 11 September 2024 (UTC)Reply
Given the challenge by @Sanad real, the relative reactivity needs a reliable reference. I removed the water reactivity because it was changed to include relative comparison unsupported by sources.
The Stanford source would support this version:
  • Due to its strong electropositive nature, rubidium reacts explosively with water.[1] As with all the alkali metals, the reaction is usually vigorous enough to ignite metal or the hydrogen gas produced by the reaction, potentially causing an explosion.[2] Rubidium has also been reported to ignite spontaneously in air.[3]
Johnjbarton (talk) 23:24, 11 September 2024 (UTC)Reply
ok sounds good Sanad real (talk) 00:15, 12 September 2024 (UTC)Reply
I put that much in. I made myself a note to look for refs at the library, but I won't get there for some time. Hopefully someone has ref. Johnjbarton (talk) 00:23, 12 September 2024 (UTC)Reply
Rubidium's spontaneous ignition in air is supported by this reference. It's pretty short though and straight up says that the content was sourced from webelements anyway.
  • Law, Johnathan; Rennie, Richard (eds.). "Rubidium". A Dictionary of Chemistry (8 ed.). Oxford University Press. ISBN 9780198841227.
Reconrabbit 00:46, 12 September 2024 (UTC)Reply
Thanks, but it's the relative effects between Rubidium, Caesium and Potassium that we are stuck on. Johnjbarton (talk) 00:51, 12 September 2024 (UTC)Reply
I did a pretty extensive search through my university's online library and didn't find anything that compared the reactivity of the alkali elements. Emsley doesn't even mention rubidium as water-reactive. Reconrabbit 01:41, 12 September 2024 (UTC)Reply
I literally put in a source explaining how the reactions look, which not only clearly indicates the order, but also exactly agrees with an Open University demonstration. The order is also totally consistent with Peter Wothers demonstrating it live. Double sharp (talk) 03:26, 12 September 2024 (UTC)Reply
Ok sorry I missed that you included a different ref (your aggressive edit summary was distracting). I added back content with that ref, please review. Johnjbarton (talk) 15:55, 12 September 2024 (UTC)Reply
The addition looks good, thank you. Yes, I should have called better attention to the new ref indeed. Double sharp (talk) 02:24, 13 September 2024 (UTC)Reply

References

  1. ^ Cotton, F. Albert; Wilkinson, Geoffrey (1972). Advanced inorganic chemistry: a comprehensive text (3d ed., completely rev ed.). New York: Interscience Publishers. p. 190. ISBN 978-0-471-17560-5.
  2. ^ Information on Alkali Metals, Stanford University
  3. ^ Cite error: The named reference Ohly was invoked but never defined (see the help page).

Edit war

Latest comment: 1 year ago4 comments2 people in discussion

Massive edit war on 9/11. Is the edit warrior blocked? 2603:8080:D03:89D4:5455:CA76:D8EB:B94F (talk) 22:30, 14 September 2024 (UTC)Reply

Was the edit warrior an IP or a registered user? 2603:8080:D03:89D4:5455:CA76:D8EB:B94F (talk) 22:33, 14 September 2024 (UTC)Reply
I requested temporary protection for both rubidium and hafnium 2603:8080:D03:89D4:5455:CA76:D8EB:B94F (talk) 22:34, 14 September 2024 (UTC)Reply
There is no such edit war. Please WP:REGISTER an account. Otherwise these kinds of baseless posts look like a form of vandalism. Johnjbarton (talk) 22:52, 14 September 2024 (UTC)Reply

Half life of rubidium-87 inconsistent data

Latest comment: 4 months ago1 comment1 person in discussion

Is it 48.8 or 49.7 billion years? Different places and sources on this page give different numbers. Gnubison (talk) 00:14, 26 March 2026 (UTC)Reply

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.