View source for Wikipedia:WikiProject Elements/PTG/background

{{PTG}}
==enwiki PT data sets==

{{Infobox element/symbol-to--navbox|state=collapsed}}

==The PT in other wikis {{anchor|1=Other wiki's}}==
{| class="wikitable sortable collapsible" style="font-size:85%"
|+ PT in other wikis
|-
! lang
! iwl
! FA
! wiki size
! lang speakers
! note<br/><small>(+=spec&nbsp;graph)</small>
! color scheme
|-
| style="background:thistle;" | :commons: [[File:Commons-logo.svg|15px|right|Commons]] || [[:commons:Periodic table of elements|:commons:PT of elements]] || || || || || 2018
|-
| style="background:lemonchiffon;" | :d: [[File:Wikidata-logo.svg|15px|right|Wikidata]] || [[:d:Q10693]] || || || || || 2020
|-
| style="background:lightgreen;"  | en || '''[[:en:Periodic table]]''' || {{icon|FA}} || || || || <s>2020</s> 2021
|-
|{{ISO 639 name|ceb}}|| [[:ceb:Talaang peryodiko]] || || || || || Same as eswiki
|-
|{{ISO 639 name|sv}}|| [[:sv:Periodiska systemet]] || || || || || 2013
|-
|{{ISO 639 name|de}}|| [[:de:Periodensystem]] || {{icon|FA}} || || ||+ || [[Wikipedia:WikiProject Elements/PTG/set/dewiki]]
|-
|{{ISO 639 name|fr}}|| [[:fr:Tableau périodique des éléments]] || || || || || 2020
|-
|{{ISO 639 name|nl}}|| [[:nl:Periodiek systeem]] || || || || || [[User:LaundryPizza03/PTG/set/nlwiki]]
|-
|{{ISO 639 name|ru}}|| [[:ru:Периодическая система химических элементов]] || || || || || 2020
|-
|{{ISO 639 name|it}}|| [[:it:Tavola periodica degli elementi]] || || || || || 2020
|-
|{{ISO 639 name|es}}|| [[:es:Tabla periódica de los elementos]] || || || || || [[Wikipedia:WikiProject Elements/PTG/set/eswiki]]
|-
|{{ISO 639 name|pl}}|| [[:pl:Układ okresowy pierwiastków]] || || || || || [[User:LaundryPizza03/PTG/set/plwiki]]
|-
|{{ISO 639 name|war}}||[[:war:Taramdan peryodika]] || || || || || 2020
|-
|{{ISO 639 name|vi}}|| [[:vi:Bảng tuần hoàn]] || {{icon|FA}} || || || || 2020
|-
|{{ISO 639 name|ja}}|| [[:ja:周期表]] || || || || || 2020, except UNK = {{colorbox|#eeeeff}} #eeeeff and SA = {{colorbox|#f4f4c6}} #f4f4c6;<br/>this wiki lumps the regular and extended periodic tables
|-
|{{ISO 639 name|zh}}|| [[:zh:元素周期表]] || || || || || Same as 2018 except RENONM = {{colorbox|#a0ffa0}} #a0ffa0
|-
|{{ISO 639 name|arz}}|| [[:arz:جدول_دورى]] || || || || + || Block-based, image-only; [[User:LaundryPizza03/PTG/set/arzwiki]]
|-
|{{ISO 639 name|ar}}|| [[:ar:جدول_دوري]] || || || || || 2020 
|-
|{{ISO 639 name|uk}}|| [[:uk:Періодична система хімічних елементів]] || || || || || 2020-like, except SA = {{colorbox|#ff7399}} #ff7399 or {{colorbox|#33cc66}} #33cc66
|-
|{{ISO 639 name|pt}}|| [[:pt:Tabela periódica]] || || || || || 2020 except AEM = {{colorbox|#f9b56a}} #f9b56a and X = {{colorbox|#e3fa67}} #e3fa67
|-
|{{ISO 639 name|fa}}|| [[:fa:جدول_تناوبی]] || || || || || 2020 
|-
|{{ISO 639 name|th}}|| [[:th:ตารางธาตุ]] || || || || || 2013, even SA and ESA
|-
|{{ISO 639 name|af}}|| [[:af:Periodieke tabel]] || || || || || 2020
|-
|{{ISO 639 name|tr}}|| [[:tr:Periyodik tablo]] || || || || || 2018
|-
| simple || [[:simple:Periodic table]] || || || || || 2020, except SA = {{colorbox|#cc70cc}} #cc70cc
|-
|{{ISO 639 name|no}}|| [[:no:Periodesystemet]] || {{icon|FA}} || || || || 2020
|-
|{{ISO 639 name|sr}}|| [[:sr:Периодни систем]] || {{icon|FA}} || || || || 2013
|-
|{{ISO 639 name|gl}}|| [[:gl:Táboa periódica dos elementos]] || {{icon|FA}} || || || || 2013
|-
|{{ISO 639 name|id}}|| [[:id:Tabel periodik]] || {{icon|FA}} || || || || 2013
|-
|{{ISO 639 name|hr}}|| [[:hr:Periodni sustav elemenata]] || {{icon|FA}} || || || || Close to 2020, except UNK = {{colorbox|#eeffff}} #eeffff
|}
:en, de wiki show viewcounts; enwiki: 23k/day; dewiki: 5200/day

==Off-wiki examples==

* [http://www.primefan.ru/stuff/chem/front2018.png primefan.ru 2018] (has Z sub-prefixed ;-) (Droog Andrey at WT:ELEM ~yesterday; Ds is enthousiastic) 28 February 2018)
* PubChem [https://pubchem.ncbi.nlm.nih.gov/periodic-table/]

==About asterisks==
[https://en.wikipedia.org/w/index.php?title=Wikipedia_talk:WikiProject_Elements&diff=1002388400&oldid=1002360145&diffmode=source This] edit by Double sharp I'd like to keep :-) -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 11:49, 24 January 2021 (UTC)
{{quote|text=Regarding the asterisks

Of interest might be the earlier [http://publications.iupac.org/pac/1988/pdf/6003x0431.pdf 1988 report] on this matter. Although this is where the compromise apparently came from, it then spends a funnily large amount of time detailing how Sc-Y-Lu-Lr works, and the subsequent 1990 IUPAC Red Book appeared inconsistently with a Sc-Y-*-** 18-column table and a Sc-Y-Lu-Lr 32-column table.


“ 	According to the electron configurations of the elements, the scandium

group consists of the elements
Sc, Y, Lu, Lr.

This was pointed out as early as 1959 by L.D. Landau (ref. 20) and later by other authors (ref. 13, 14, 20 to 25). Most periodic tables in textbooks and classrooms, however, list Sc, Y, La, and Ac as elements of the scandium group and designate the elements Ce to Lu and Th to Lr as lanthanides and actinides, respectively. The historical background for this arrangement is given in a paper by W.B. Jensen (ref. 21). Based upon their electronic configurations and their chemical and physical properties, the elements La to Yb and Ac to No should be inserted between barium and lutetium and between radium and lawrencium or for practical reasons be listed at the bottom of the table. The series La to Yb and Ac to No then, however, cannot be named correctly as lanthanides and actinides since they contain the elements lanthanum and actinium and not only elements similar to lanthanum and actinium as is purported by the ending -ide (or -oid according to an earlier IUPAC recommendation).
	”

Therefore I would say that having asterisks to show where exactly La–Yb and Ac–No belong (between groups 2 and 3), although not explicitly recommended, is surely within the spirit of what is stated given the pains that were taken to explain where exactly they should be inserted. Double sharp (talk) 05:11, 24 January 2021 (UTC) |author=Double sharp|style=background:#ddd}}

:Also the report clearly explains that the "long form" refers to the 18-column, pre-actinides (pre-Seaborg) form. As opposed to the "short form", the Mendeleevian 8-gruppe (10-column) PT, with or without the noble gases column (#11). The "32-column" form is ''not'' a structural change, it is a graphical notation (alternative to the ''18-column plus ~f-block below''. Not the depiction (18 or 32 columns), but the ''addition of the f-block '' does require naming like 'Extended long form'. -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 12:08, 24 January 2021 (UTC)

==Basic colors==
{{PTG/set-links|set=basic}}

{{PTG/contrast-header|set=basic|note=|title=bsic colors}}
|-
{{PTG/contrast-row|set=basic|name=red|fontcolor=wl|note=|hsv=yes}}
{{PTG/contrast-row|set=basic|name=blue|fontcolor=wl|hsv=yes}}
{{PTG/contrast-row|set=basic|name=green|fontcolor=wl|hsv=yes}}
{{PTG/contrast-row|set=basic|name=yellow|fontcolor=wl|hsv=yes}}
{{PTG/contrast-row|set=basic|name=pink|fontcolor=wl|hsv=yes}}
{{PTG/contrast-row|set=basic|name=wl|fontcolor=|hsv=yes|note=analyse wl}}
|}

==Rare earths discoveries ==
:Interesting graph
* [https://elements.vanderkrogt.net/rareearths.php Ytterby and Cerium graph] -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 13:08, 26 January 2021 (UTC)