This article is supported by WikiProject Elements, which gives a central approach to the chemical elements and their isotopes on Wikipedia. Please participate by editing this article, or visit the project page for more details.ElementsWikipedia:WikiProject ElementsTemplate:WikiProject Elementschemical elements articles
See the second table in Actinide#Properties. Since the colors are the topic (not an illustration), I have made the bg white for good showing. Now it appears that three ions have no color added at all (per row the leftmmost one, starting with Ac3+). I suggest someone adds their color as bg color (which could be white). As it stands now, their colors are "undecided and unexplained". -DePiep (talk) 08:13, 10 November 2019 (UTC)[reply]
IUPAC argues that the -ide ending is reserved for a binary compound, such as chlorides or nitrides. The -oid ending means "similar to" as in humanoid or android. Therefore, I do propose to use the new official name first, with the old -ide ending second as a synonym. --Gunnar (talk) 10:18, 1 September 2020 (UTC)[reply]
I agree, but judging from Talk:Lanthanide, this seems unlikely to get consensus.
Also: the idea that actinoids are similar to Ac (which is basically a more basic and electropositive La) is kind of a joke. Anyone who believes it should compare chemistries of lanthanum and uranium. Lanthanoids are indeed similar to La. So maybe the -oid ending is not particularly right either. I don't know if this influenced anybody to avoid adopting the new -oid endings, though. Double sharp (talk) 08:34, 24 March 2021 (UTC)[reply]
I am concerned that this article no longer meets the good article criteria. Some of my concerns are listed below:
The lead is quite long, and should probably be trimmed. There are also citations in the lead, which is not necessary per WP:LEADCITE: is all of this information in the body of the article?
There are uncited passages throughout the article.