Talk:Carbon

GA Reassessment

Carbon

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

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Article (edit | visual edit | history) · Article talk (edit | history) · Watch • Watch article reassessment page • Most recent review

Result: Keep, all concerns has been addressed. Keres🌕Luna ^edits! 13:42, 25 May 2025 (UTC)

Lots of uncited statements, including entire paragraphs. Z1720 (talk) 16:42, 21 April 2025 (UTC)

Wow the previous GAN had some serious issues. For example, the section about '... Although thermodynamically prone to oxidation, carbon resists oxidation more effectively than elements such as iron and copper, which are weaker reducing agents at room temperature.' got put in the review as uncited, but it never got resolved and passed anyways. Keres🌕Luna ^edits! 01:54, 23 April 2025 (UTC)

It looks like the most egregious examples of missing references are in the Compounds and Applications sections. The "Precautions" section also seriously needs a hazard infobox and should be renamed to something else to reduce "how-to guide" implications. One more thing: there's no good reason for the levels of WP:SANDWICH going on under Applications. Though I can't dedicate much time to this until I finish other tasks (as Keresluna is probably well aware; sorry!!) -- Reconrabbit 18:02, 26 April 2025 (UTC)

Still work being done, please hold. Keres🌕Luna ^edits! 22:45, 21 May 2025 (UTC)

@Z1720: All statements are referenced and all the concerns above are addressed. Keres🌕Luna ^edits! 02:14, 24 May 2025 (UTC)

@Keresluna: I added some citation needed tags in places where I think citaions are also required. Z1720 (talk) 14:50, 24 May 2025 (UTC)

One addressed. One removed as WP:CALC. Not sure how to reference the claim In German, Dutch and Danish, the names for carbon are Kohlenstoff, koolstof, and kulstof respectively, all literally meaning coal-substance. as Kohlen-stoff literally means Coal-substance in german and others similarly. Would this qualify has WP:OBV? Keres🌕Luna ^edits! 15:35, 24 May 2025 (UTC)

@Keresluna: WP:OBV is an essay, just like WP:NOTBLUE is an essay: neither is Wikipedia policy and guidelines (they might "represent widespread norms" while "others only represent minority viewpoints") so instead WP:V needs to be used to decide if it needs to be verified. I do not speak German, Dutch, or Danish, so I would not be able to verify that the information in this sentence is correct: since this statement can be challenged, it should be cited in my opinion. Z1720 (talk) 20:08, 24 May 2025 (UTC)

Statement removed. Keres🌕Luna ^edits! 21:29, 24 May 2025 (UTC)

@Z1720: Added statement back with references. Keres🌕Luna ^edits! 21:46, 24 May 2025 (UTC)

Keep. Concerns have been resolved. Z1720 (talk) 01:57, 25 May 2025 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

Liquid Carbon conditions achieved

Now this is interesting. https://www.ukri.org/news/uk-laser-creates-conditions-to-form-liquid-carbon-for-first-time/ I wonder if an editor may wish to incorporate this into the physical properties section the article. Triple-point reached. Careful With That Axe, Eugene ^Hello... 13:39, 30 May 2025 (UTC)

Add references

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Carbon is the 15th most abundant element in the Earth's crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen.

Source:

This educational article from the American Society for Biochemistry and Molecular Biology (ASBMB Today), a reputable scientific journal platform, states that carbon ranks as the 15th most common element in the Earth's crust and the fourth most abundant element in the observable universe by mass, following hydrogen, helium, and oxygen. The explanation further elaborates on the stellar processes that generate carbon, including the triple-alpha fusion and distribution via supernovae, reinforcing the scientific reliability of these abundance figures. This source is grounded in current astrophysical and geochemical research and is considered trustworthy in academic contexts.

URL: https://www.asbmb.org/asbmb-today/science/060119/for-june-and-july-it-s-atomic-nos-6-and-7

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The atoms of carbon can bond together in diverse ways, resulting in various allotropes of carbon.

Source:

This chemistry textbook from the LibreTexts project—an open-access educational platform widely used in academic institutions—explains that carbon’s tetravalency enables its atoms to bond with one another in multiple ways, leading to a variety of allotropes. It outlines how different bonding arrangements among carbon atoms result in distinct structural forms, providing a credible and pedagogically sound explanation of the concept. This resource is frequently utilized in university-level general chemistry courses and offers both clarity and academic reliability.

URL: https://chem.libretexts.org/Bookshelves/General_Chemistry/CLUE%3A_Chemistry_Life_the_Universe_and_Everything/03%3A_Elements_Bonding_and_Physical_Properties/3.3%3A_Carbon%3A_An_Amazingly_Allotropic_Element

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Graphite is much more reactive than diamond at standard conditions, despite being more thermodynamically stable, as its delocalised π system is much more vulnerable to attack.

Source:

This scholarly review article—published in Chemical Physics Reviews by the Royal Society of Chemistry—provides a detailed comparison of the thermodynamic stability of carbon allotropes. It affirms that graphite is thermodynamically more stable than diamond under standard conditions, despite only slightly so (by about 2 kJ mol⁻¹). It goes on to explain that graphite’s delocalized π-electron system makes it more chemically reactive and susceptible to attack, whereas diamond’s rigid sp³-bonding network protects it from most chemical reactions. This analysis is grounded in experimental thermodynamics and density functional theory, making it a rigorous and authoritative evidence for the statement.

URL: https://pubs.rsc.org/en/content/articlehtml/2019/cp/c8cp07592a

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Carbon is also found in methane hydrates in polar regions and under the seas.

Source:

This educational review from the World Ocean Review explains that methane hydrates—where methane molecules containing carbon are trapped within crystalline water structures—are widespread in marine sediments along continental margins as well as in polar permafrost regions. It emphasizes that these methane hydrates represent substantial carbon reservoirs, and their stability is influenced by depth and temperature conditions. The analysis is grounded in oceanography and geochemistry, making it a reliable source for understanding where carbon is stored in hydrate form under polar and seabed environments.

URL: https://worldoceanreview.com/en/wor-1/energy/methane-hydrates/

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Carbon-rich asteroids are relatively preponderant in the outer parts of the asteroid belt in the Solar System.

Source:

This peer-reviewed planetary science study explains that carbonaceous and carbon-rich (C/B-type and D/P-type) asteroids are predominantly found in the outer main asteroid belt, whereas silicate-rich (S/L-type) asteroids are more common closer to the Sun. The compositional distribution, derived from spectroscopic observations and dynamical modeling, demonstrates that carbon-rich bodies are significantly more abundant in the belt’s outer regions, providing a robust scientific foundation for the statement.

URL: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9005435/ Jaroslav Radomír (talk) 10:09, 30 August 2025 (UTC)

@Jaroslav Radomír If you think that the article needs additional sources, then you may be bold and add them: this is a standard way that Wikipedia grows. Note, however, that we don't need to cite all the statements in the lead of the article, which is only meant to summarise the fuller content cited later. See advice at WP:LEADCITE. For assistance in creating full citations correctly, see Help:referencing for beginners. Mike Turnbull (talk) 10:25, 30 August 2025 (UTC)

Thank you, Mike, for the clarification and the helpful advice. I’ll keep in mind that the lead only needs to summarize the cited content from the body, and I’ll review WP:LEADCITE and the referencing guide to improve my edits. I appreciate your guidance! Jaroslav Radomír (talk) 02:11, 1 September 2025 (UTC)

Not to be confused with Cabrón or Corbon

also my captcha is bonegases -BODOKE2801e (talk), 21:37, 26 march 2026

I've done the corbon suggestion, thanks. Cabrón was already there, as I assume you knew. Mike Turnbull (talk) 17:43, 27 March 2026 (UTC)

Semi-protected edit request on 28 May 2026

hi Please change Link to Reference 8 https://www.nde-ed.org/GeneralResources/MaterialProperties/ET/ET_matlprop_Misc_Matls.htm since it is is broken and change it to working link at web archive here :

 https://web.archive.org/web/20040305122042/https://www.nde-ed.org/GeneralResources/MaterialProperties/ET/ET_matlprop_Misc_Matls.htm Braniti (talk) 10:00, 28 May 2026 (UTC)

Thanks for noticing that, User:Braniti. I made the edit at {{infobox carbon}}. Mike Turnbull (talk) 11:00, 28 May 2026 (UTC)