Talk:Calcium

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Calcium 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.
Review: June 27, 2017. (Reviewed version).

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This article is written in British English with Oxford and IUPAC spelling (colour, realize, organization, analyse; note that -ize is used instead of -ise; aluminium, sulfur and caesium) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide and chemistry naming conventions, this should not be changed without broad consensus.

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Crystal structure

According to the handbook of chemistry and physics 95th edition (CRC Press), face-centered cubic calcium turns into body-centered cubic above 443°C and not hexagonal as mentionned in the article. This is also written in this abstract (here: https://iopscience.iop.org/article/10.1149/1.2430364/meta) from 1956 (but for a temperature of 464°C). Fullmetalgrudo (talk) 13:42, 28 January 2024 (UTC)[reply]

Thanks Fullmetalgrudo, I find other recent authoritative sources agree with your post and updated the article to state that it changes from fcc to bcc as you note. The source I used (Arblaster 2018) says that publications from 1956 and 1958 "reported an intermediate hexagonal close-packed (hP2) structure but Peterson and Fattore 1961 showed that this was due to hydrogen contamination." –MadeOfAtoms (talk) 10:08, 20 April 2024 (UTC)[reply]

Applications

One application I had read about elsewhere in Wikipedia which I didn't see on this page is that calcium can be alloyed with magnesium to prevent it from catching fire; while alloying aluminum with magnesium also reduces the risk of catching fire, such alloys can still catch fire at very high temperatures, while a suitable alloy with calcium would not catch fire under any circumstances. Quadibloc (talk) 14:17, 26 June 2024 (UTC)[reply]

I checked "Magnesium Alloys" (doi 10.1002/14356007.a15_581). No mention of Ca-Mg alloys.--Smokefoot (talk) 18:56, 27 June 2024 (UTC)[reply]

Semi-protected edit request on 24 December 2024

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Change "heat of vaporisation" to "heat of vaporization" bc this is in British Oxford English. 98.219.46.92 (talk) 02:40, 24 December 2024 (UTC)[reply]

Done _ZZ^Z 'S 02:43, 24 December 2024 (UTC)[reply]

Wiki Education assignment: BIOL 3358 Cellular and Molecular Neuroscience

This article is currently the subject of a Wiki Education Foundation-supported course assignment, between 14 January 2025 and 28 April 2025. Further details are available on the course page. Peer reviewers: Sandisk9045.

— Assignment last updated by Sandisk9045 (talk) 02:13, 2 March 2025 (UTC)[reply]