Talk:Rhenium/Archive 1

Talk
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I think data of rhenium in english and in spanish don´t mach (see melting heat in both pages)

Regards,

Pablo —Preceding unsigned comment added by 80.58.205.36 (talk) 10:00, 7 April 2008 (UTC)

I'm concerned regarding two conflicting pieced of information. 1) The page states Rhenium is not naturally found on Earth, 2) followed by a statement regarding it's 'most natural state'.

How can it have a most common state, when it is NOT naturally found on Earth? Ferbutt (talk) 21:34, 27 May 2008 (UTC)ferbutt


 * It doesn't say it's not found on Earth. It says "Rhenium is not found free in nature". The key word is free. That means that it is found only as part of a compound. The same is true for most elements, including sodium and chlorine, for example. --Itub (talk) 12:07, 30 May 2008 (UTC)

occurance
"Rhenium (Latin Rhenus meaning "Rhine") was the last naturally occurring element to be discovered."

Even if it is in only small quantities, samples from technetium have been extracted from pitchblende from Belgian Congo. The discovery of technetium was confirmed in 1937.

It says that rhenium was the last naturally occuring element to be discovered -- and then later that it was the next-to-last naturally occuring element to be discovered. Which is true? (I am leaning towards next-to-last; I believe francium was the last element to be discovered in nature). Bbi5291 00:49, 26 August 2007 (UTC)

I changed it to "next to last", so it is consistent within the article. Francium was discovered later, and the article about francium claims that it was the last naturally ocurring element to be discovered. The difference seems to stem from "naturally" meaning "can be found in nature" vs. "naturally" as in "has a stable isotope". Francium has no stable isotope and all its isotopes are rather short lived with the most stable having a half life of 21.8 minutes (information from the article about francium). 149.156.124.12 11:17, 15 November 2007 (UTC)

It now reads "last naturally occurring stable element to be discovered", which is fine as far as factual accuracy goes. Bbi5291 (talk) 01:08, 11 September 2008 (UTC)

Solubility
what is the solubility of rhenium? please answer me back 180.191.68.119 (talk) 09:48, 22 July 2010 (UTC)
 * In water it is insoluble. --Stone (talk) 15:11, 22 July 2010 (UTC)

Oxidation state -3
List of oxidation states of the elements has -3 state, but during GA review, Stone couldn't find proper references for that. Thus for now I have removed -3 and -2 oxidation states from the article to avoid confusion. Materialscientist (talk) 23:26, 23 June 2009 (UTC)


 * I removed the reference to Re having the most known oxidation states of any element, as currently only 9 are listed here, while Osmium has eleven according to its article. The Os article even lists the most commonly known compound for Os in each oxidation state; something like that probably should be done here as well, especially for the rarer oxidation states. Stonemason89 (talk) 19:12, 15 September 2009 (UTC)


 * FYI: Greenwood and Earnshaw list as an example of oxidation state -3. (2nd edition page 1046). Christian75 09:47, 10 June 2011 (UTC)

File:Rhenium single crystal bar and 1cm3 cube.jpg to appear as POTD soon
Hello! This is a note to let the editors of this article know that File:Rhenium single crystal bar and 1cm3 cube.jpg will be appearing as picture of the day on May 18, 2012. You can view and edit the POTD blurb at Template:POTD/2012-05-18. 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} 16:53, 17 May 2012 (UTC)

beta decay
Thanks to the WTF note by 66.27.129.96 I've looked at the statement that Re has the lowest beta-decay energy (26 keV). According to the "TABLE OF THE ISOTOPES" in the CRC handbook, 90mY has ~20 keV. To a specialist reading this, please check. Thank you. NIMSoffice (talk) 23:45, 6 May 2009 (UTC)


 * It is not likely to be possible to determine empirically what isotope has the lowest beta-decay energy. Low-energy betas will be extremely difficult to detect, because they will not tend to escape the source, and their signals will be hard to distinguish from noise in a detector.--75.83.70.28 (talk) 04:00, 18 May 2012 (UTC)

Superconducting transition temperature
The article gives the T c of rhenium as 2.4 K, with a 1952 measurement of rhenium powder (Physical Review 88 (2): 309–311) that supports this value. However, later papers measuring bulk rhenium metal all (at least all I've read) show T c close to 1.7 K. A later article (Physical Review 94 (5): 1390-1391) gives the value as 1.699 K and ascribes the discrepancy to the previous paper's use of powdered rhenium. The CRC Handbook of Chemistry and Physics gives the T c as (1.697 ± 0.006) K. In light of the fact that most readers will expect the reported T c as that of the bulk material, should this reported value (and the corresponding reference) be changed? Lambda(T) (talk) 21:20, 15 October 2012 (UTC)
 * Agree and changed. Physics aside, we should follow secondary sources (CRC) in such disagreements. Materialscientist (talk) 07:37, 16 October 2012 (UTC)

comment
The prose sometimes gets somewhat choppy and disjointed (e.g. Compounds section). I want links between the various things being discussed! Double sharp (talk) 15:07, 9 July 2013 (UTC)

Did Ogawa discover Re?
Eric Scerri seems sceptical in A tale of seven elements. Double sharp (talk) 14:35, 13 September 2014 (UTC)

Re stability in an oxygen-containing atmosphere
text currently reads: "Rhenium has a high melting point and a low vapor pressure similar to tantalum and tungsten. Therefore, rhenium filaments exhibit a higher stability if the filament is operated not in vacuum, but in oxygen-containing atmosphere.[51]"

However, reference 51 says no such thing: in its intro ref 51 says that the vapor pressure of Re oxides is higher than that of tungsten oxides and that therefore Re is superior to W in the presence of refractory oxides. In the current text it also says that one of the reasons that W and Re make good electrical switches is the ready sublimation of their oxides - meaning their surfaces do not end up with thick insulating oxide coatings. So, it seems that Re would exhibit higher stability under vacuum than in an oxygen-containing atmosphere.

Marcelsluiter (talk) 12:28, 4 March 2015 (UTC)

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Inconsistency
We hear that rhenium is the last and second last stable element to be discovered. — Preceding unsigned comment added by 86.182.62.157 (talk) 15:12, 1 May 2018 (UTC)
 * I've changed it to say "second-last" throughout. Double sharp (talk) 16:01, 1 May 2018 (UTC)

Changed
Article changed over to new WikiProject Elements format by maveric149. Elementbox converted 11:21, 14 July 2005 by Femto (previous revision was that of 17:33, 24 June 2005). 24 June 2005

Information Sources
Some of the text in this entry was rewritten from Los Alamos National Laboratory - Rhenium. Additional text was taken directly from USGS Rhenium Statistics and Information, from the Elements database 20001107 (via dict.org) and WordNet (r) 1.7 (via dict.org). Data for the table was obtained from the sources listed on the subject page and WikiProject Elements but was reformatted and converted into SI units. --

"Thenium" listed at Redirects for discussion
An editor has asked for a discussion to address the redirect Thenium. Please participate in the redirect discussion if you wish to do so. Steel1943 (talk) 19:43, 20 September 2019 (UTC)

"Thenium" listed at Redirects for discussion
An editor has asked for a discussion to address the redirect Thenium. Please participate in the redirect discussion if you wish to do so. 1234qwer1234qwer4 (talk) 19:01, 2 March 2020 (UTC)