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Copper 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.

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Date	Process	Result
October 2, 2006	Good article nominee	Listed
September 23, 2007	Good article reassessment	Delisted
April 14, 2011	Peer review	Reviewed
May 1, 2011	Good article nominee	Listed
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This page has archives. Sections older than 365 days may be automatically archived by Lowercase sigmabot III when more than 2 sections are present.

Fire diamond inaccuracy

According to a website, the fire diamond is a level one health hazard and a level one fire hazard.^[1]

References

^ "NFPA Label for all the elements in the Periodic Table". periodictable.com. Retrieved 2018-07-01.

Probably wrong link in History

In the subsection Ancient and post-classical of History, in the second paragraqph there is a link leading to the biology article https://en.wikipedia.org/wiki/Supergene instead of https://en.wikipedia.org/wiki/Supergene_(geology), as probably was intended and fits context better. — Preceding unsigned comment added by 141.84.250.1 (talk) 14:41, 25 November 2021 (UTC)[reply]

Done Thank you for noticing. BiologicalMe (talk) 14:49, 25 November 2021 (UTC)[reply]

Semi-protected edit request on 26 January 2022

This edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request.

Can I edit 107.196.237.244 (talk) 23:14, 26 January 2022 (UTC)[reply]

Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate.

Production Chapter Errata

There are some errors in Copper#Methods chapter:

~~Cuprous Sulfide Converts to Cuprous Oxide:~~

~~2 Cu₂S + 2 O₂ → 2 Cu₂O + 2 SO₂~~

Production of blister copper:

2 Cu₂O + Cu₂S → 6 Cu + 2 SO₂

~~I can't edit article, please correct them.~~ --DoroWolf (talk) 05:21, 29 March 2022 (UTC)[reply]

I can edit now. Help is no longer needed.--DoroWolf (talk) 06:17, 29 March 2022 (UTC)[reply]

Chemistry

Description of copper+air 119.2.125.166 (talk) 07:53, 26 June 2022 (UTC)[reply]

In Copper#Chemical it is explained that copper reacts with oxygen in the air to form an oxide. The kind of oxide that is formed depends on the environmental conditions. –LaundryPizza03 (d c̄) 11:38, 26 June 2022 (UTC)[reply]

Semi-protected edit request on 29 June 2022

This edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request.

An editor has accidentally used the Cyrillic letter с (Es) instead of the Latin letter c in two words in this article. This wasn't vandalism, just an error by an editor with a Cyrillic keyboard.

In the following text, both "сyprium" and "сuprum" are using the Cyrillic letter instead of the Latin one, which apart from being wrong causes the font's kerning to be off.

Please change the following:

''aes сyprium'' (metal of Cyprus), later corrupted to ''сuprum''

to the identically looking:

''aes cyprium'' (metal of Cyprus), later corrupted to ''cuprum''

31.209.210.42 (talk) 22:29, 29 June 2022 (UTC)[reply]

Done Nice catch. --Kent G. Budge (talk) 23:55, 29 June 2022 (UTC)[reply]

Edit request

The energy difference between the d & s shells corresponds to blue light. Reflected light without the blue makes the cupper appear red.

https://www.flinnsci.com/api/library/Download485982234af046b491724d3736c93c51 http://ee.iitm.ac.in/~hsr/ec301/copper.pdf 1.159.58.220 (talk) 02:37, 17 October 2022 (UTC)[reply]

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