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Relative abundance of elements in the Earth's crust.[edit]

An IP user has been adding unsourced lines like

"It is the 45th most abundant element on earth."

to many elements. Is there a reliable reference online for these values? Johnjbarton (talk) 22:26, 20 March 2024 (UTC)[reply]

That reference is probably the WebElements column in the article abundance of elements in Earth's crust. Various sources have different rankings, and I’m not sure is CRC a better reference for this. Nucleus hydro elemon (talk) 22:43, 20 March 2024 (UTC)[reply]

Thanks! However, the WebElements.com site does give the relative abundance and therefore can't be used as source. The table in abundance of elements in Earth's crust has ppm values from various sources, and the table has a row number along the left side, but this is not a source either (WP:CIRCULAR). Johnjbarton (talk) 15:24, 21 March 2024 (UTC)[reply]

Please weigh in on my proposal on Talk:Abundance of elements in Earth's crust to split the table on that page. Johnjbarton (talk) 16:02, 21 March 2024 (UTC)[reply]

15 new isotopes of Cu–Kr[edit]

A new paper has announced the discovery of 15 new neutron-rich isotopes of elements copper through krypton and with mass numbers from 84 to 103.

Shimizu, Y.; Kubo, T.; Sumikama, T.; Fukuda, N.; Takeda, H.; Suzuki, H.; Ahn, D. S.; Inabe, N.; Kusaka, K.; Ohtake, M.; Yanagisawa, Y.; Yoshida, K.; Ichikawa, Y.; Isobe, T.; Otsu, H.; Sato, H.; Sonoda, T.; Murai, D.; Iwasa, N.; Imai, N.; Hirayama, Y.; Jeong, S. C.; Kimura, S.; Miyatake, H.; Mukai, M.; Kim, D. G.; Kim, E.; Yagi, A. (8 April 2024). "Production of new neutron-rich isotopes near the N = 60 isotones Ge 92 and As 93 by in-flight fission of a 345 MeV/nucleon U 238 beam". Physical Review C. 109 (4). doi:10.1103/PhysRevC.109.044313.

The new nuclides are ⁸⁴Cu, ^86–87Zn, ^88–89Ga, ^91–92Ge, ^93–95As, ^96–97Se, ^99–100Br, and ¹⁰³Kr. I cannot access the paper beyond the abstract and figures in order to get any nontrivial information that is not extrapolated in NUBASE2020 + AME2020 II, such as a lower bound on the half-life of the new nuclides.

Also, some of the isotope lists affected by this update are extremely out of date; Isotopes of copper, for example, did not include ^81–83Cu until I fully updated the list to NUBASE2020 + AME2020 II, which is why I took the effort to update this one thoroughly. –LaundryPizza03 (d c̄) 22:39, 15 April 2024 (UTC)[reply]

@LaundryPizza03: I had seen this paper, though I've been too busy the past few days to update the isotopes pages – thanks for doing so. There isn't any mass or decay data in the article, though if you'd like a PDF copy I can email you. ^Complex/_Rational 02:14, 16 April 2024 (UTC)[reply]

No thanks. In that case, I can just fill in NUBASE2020 estimates where appropriate. –LaundryPizza03 (d c̄) 03:05, 16 April 2024 (UTC)[reply]

"Range of variation" column[edit]

Sometimes it is filled with something, sometimes it is merged with the "Normal proportion" column. But most of the time, it just leaved blank. Why this column exist when it is completely empty in that isotopes page?

Completely deleting this column to all pages might be too disruptive, but IMHO this column can be removed for mononuclidic elements. There is only one isotope with abundance 100% for them, so they don't need this column. --Nucleus hydro elemon (talk) 06:50, 1 May 2024 (UTC)[reply]

How to help best[edit]

Hey there, I recently discovered this WikiProject and I'd really like to contribute to the good work that is being done here. I have looked around on the project pages, and am wondering what I could do that would be most useful. Should I adopt one of the element/period/group pages that are not GA yet (and not actively worked on by a project member) and focus on improving it? Patrol the recent changes on the pages followed by the project? Something else that is crucial but not obvious at first glance? A bit of everything? Thanks! Choucas Bleu (T·C) 14:40, 1 May 2024 (UTC)[reply]

I think you should edit pages that you are most interested in. Every edit adds that page to your "watch" list. Also "watch" this page. I expect your list of topics will grow over time.

In case it is helpful, there is a tool for look for most-visited pages by category:

Popular pages: Most visited pages in Elements during April 2024
Popular "C" rated pages (where big improvements are easiest) Most visited "C" pages in Elements during April 2024

Johnjbarton (talk) 15:05, 1 May 2024 (UTC)[reply]

Thank you for linking the tool, it is indeed quite helpful. Choucas Bleu (T·C) 15:26, 1 May 2024 (UTC)[reply]

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