Talk:Actinide

Colors of ions
See the second table in Actinide. 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)
 * Maybe this second table could be merged into the big one above it. (Colors row can have multiple subrows). -DePiep (talk) 08:28, 10 November 2019 (UTC)
 * And, the big table be transposed, so that columns can be sortable for more comparing options. -DePiep (talk) 08:29, 10 November 2019 (UTC)
 * They are colourless. Think of plain water. Double sharp (talk) 08:35, 24 March 2021 (UTC)

Error in graph?
Just noticed: Isn't there an error in the table or graph for Lr? The table says the longest-lived isotope for Lr(Z=103) is Lr 266. Yet in the isotope graph, there are no isotopes for Lr over 262. — Preceding unsigned comment added by 88.103.29.180 (talk) 22:27, 10 June 2020 (UTC)
 * Seems the graph predates discovery of 266Lr; should probably be changed. Double sharp (talk) 12:31, 24 January 2021 (UTC)

Actinide vs Actinoid
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)
 * 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)