Talk:Thorium

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Warnings flagged by script for refs and notes

Hello. I'm working on a script to facilitate consistency in checks for refs and notes. I have some questions about its output for this article. Some things listed below may be genuine errors, but many may not (e.g., oclc numbers are considered useful but not required). Any comments or feedback would be gratefully accepted & also would be helpful in tweaking the script:

• Masterton, W. L.; Hurley, C. N.; Neth, E. J. Chemistry: Principles and reactions (7th ed.) has no date.
• van Spronsen, J. W. (1969). The periodic system of chemical elements. Pub. too early for ISBN; Missing OCLC;
• Feynman, R.; Leighton, R.; Sands, M. (1963). The Feynman Lectures on Physics. Pub. too early for ISBN; Missing OCLC;
• Educational Foundation for Nuclear Science, Inc. Bulletin of the Atomic Scientists. pp. 19–20. ISSN 0096-3402. Missing Publisher; Missing Year/Date;
• Hyde, E. K. (1960). The radiochemistry of thorium (PDF). National Academy of Sciences. Retrieved 29 September 2017. Missing OCLC;
• Clayton, D. D. (1968). Principles of Stellar Evolution and Nucleosynthesis. McGraw-Hill Education. pp. 577–591. ISBN 978-0-226-10953-4. Pub. too early for ISBN; Missing OCLC;
• Thomson, T. (1831). A System of Chemistry of Inorganic Bodies. 1. Baldwin & Cradock and William Blackwood. p. 475. Missing OCLC;
• Dana, J. D.; Brush, G. J. (1875). A System of Mineralogy: Descriptive Mineralogy, Comprising the Most Recent Discoveries. John Wiley & Sons. p. 529. Missing OCLC;
• Selbekk, R. S. (2007). "Morten Thrane Esmark". Store norske leksikon (in Norwegian). Kunnskapsforlaget. Retrieved 16 May 2009. Missing ISBN;
• Inconsistent use of access dates and archiving on web pages.
• Some books cited repeatedly but not moved into Bibliography section, e.g. Fontani, M.; Costa, M.; Orna, V. (2014). The Lost Elements: The Periodic Table's Shadow Side. Oxford University Press. p. 73.
• ASIN uses ISBN for Langford, R. E. (2004). Introduction to Weapons of Mass Destruction: Radiological, Chemical, and Biological.
• Thanks Lingzhi ♦ (talk) 15:18, 30 January 2018 (UTC)

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Featured

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[The metal] does not readily dissolve in most common acids, with the exception of hydrochloric acid, where it dissolves leaving a black insoluble residue of ThO(OH,Cl)H

This sentence does not make sense. Either it dissolves

Th +4H⁺ → Th⁴⁺ + 2H₂↑

or it does not. If it dissolves, the oxide layer on the metal surface will also dissolve in the acidic solution.

ThO₂ + 4H⁺ → Th⁴⁺ + 4H₂O

When alkali is added to an acidic (HCl) solution of Th(IV), [Th(OH)]³⁺ is first formed (pK≈9), then precipitation occurs. It is most unlikely that the precipitate is an insoluble /basic hydroxide /oxide /chloride /hydride species, as metal hydrides are not produced under these conditions. Petergans (talk) 11:10, 5 March 2018 (UTC)

I think this sentence can actually counted as supported by a source. Here's what the source says:

Thorium reacts vigorously with hydrochloric acid. The reaction with hydrochloric acid always leaves a certain amount of a black residue (12 to 15%) behind, which was first thought to be ThO2 that was originally present in the metal (Matignon and Delepine, 1901; Meyer, 1908; von Wartenberg, 1909). As discussed in Section 3.7.3, other studies have suggested that a lower‐valent thorium oxide hydrate, ThO·H2O, is formed but it is much more likely that this compound is in fact an oxide hydride containing hydroxide and chloride ions according to ThO(X)H (X -- combination of OH− and Cl−) (von Bolton, 1908; Karstens, 1909, Katzin, 1944,1958; Karabash, 1958; Katzin et al., 1962). This assumption is also supported by mass spectroscopic investigations that show Cl− to be present in the residue(Ackermann and Rauh, 1973a). The reaction of thorium with other acids occurs slowly, with nitric acid even passivation is observed (Smithells, 1922; Schuleret al., 1952).

Given this, I don't think we're particularly wrong here, are we?--R8R (talk) 11:54, 5 March 2018 (UTC)

Under Isotopes, I found a slight error; ²³⁴U is the parent of ²³⁰Th, not ²³⁸U.

DaveyHume (talk) 02:17, 14 May 2019 (UTC)