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* '''{{tlt|1=Infobox element isotopes}}''' [[WT:ELEM]]
__TOC__

==One more try for WD==

* ELEM/ISO/WD: [[Wikipedia:WikiProject Elements/Isotopes/wikidata]]

==Main table==
*{{t links|Isotopes table/header}}

*{{t links|Isotopes table/footer}}

==Isotopes==
*Below is my proposal for extra columns for the isotopes. Will put it on [[Template talk:Infobox element isotopes]] in a few days.

:Please take a look and improve as you think best, eliminate errors and misunderstandings. Do edit without discussion.
:However, better not start or cause discussion. That should happen on the talkpage. -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 21:17, 8 June 2017 (UTC)

==Infobox isotopes table: new columns & structures==
Proposals for '''adding columns to {{tl|Infobox element isotopes}}''' (aka isoboxes). It follows that we need four different table setups (four table headers).

New columns are: spin, chain, from chain, first-when, first-who, iso-note.
Table setups: 1. STABLE elements, 2. ALL STABLE, 3. CHAIN (unstable elements), 4. SYN (synthetic heavies).

An earlier discussion at [[Wikipedia_talk:WikiProject_Elements/Archive 25#Infoboxes:_split_table_Isotopes_into_new_infobox|WT:ELEMENTS, Archive 25]] (March 2017). From there, I've token some quotes from Double sharp.

===Proposal, topics & setup===
* The changes are mostly '''columns''' (quantities) to be added. We need to pre-define the tables using them. It appears that sets of elements require different columns (=tables). For now, we expect four different sets (four different table headers). No new rows foreseen (existing rows are: stable, and decay 1&ndash;4).
:Within one table (=element), the number & type of isotopes (rows) are ''free for the editor'' (not be limited by table header or by this discussion).

: The column set for 'stable' has a different 'header' already. For now, we can keep that way of doing. That is: each table can accommodate stable isotope rows.

* Columns 'decay energy' and decay 'product' are removed. 

* '''Do not worry about''': table format tweaking, which isotopes to list(!), exact value formatting, row-templates, linked/notlinked values, Infobox element (it will follow, later), how must I enter it (hardcode it. The isotope-row templates not used).

* '''Do worry about''': main table structure; columns: number, order, header text; covering all expected isotope situations per element?, possible values, add helpful examples

* Implementation: when accepted, per element one table-header (1 out of 4) must be picked, to announce which columns are used. Then isotope data be entered & maintained. Can happen: empty cells. May not happen: number of columns in table varying (righthand side indenting).
:Technically: When decided here, template changes will follow. Expect new parameter names like {{para|spin}}, but we'll try to smartly automate other details (such as correct table header picking). 

Overall discussion is below, at [[#Discuss setup in general]] (not here).

===Table 1: Add '[[nuclear spin]]' (stable elements)===
<div class="floatright">{{Infobox element/element navigation|symbol=N|sectionheader=no}}</div>
Double sharp: "I find that when I write "Isotopes" sections in articles on stable elements (H to Bi, except Tc and Pm), I want to mention the stable isotopes and their natural abundance, but then one of the other things I want to go into is nuclear spin (important for [[Nuclear magnetic resonance]] (NMR))".

* <sub>1</sub>H to <sub>83</sub>Bi (except: Tc, Pm)
:The 'spin' column is added to every table proposed. For the stable H&ndash;Bi elements, it is the ''only'' addition. 
:Parameter {{para|spin}}
:Values: one per isotope (row)
:Typical values: (2−), 1/2+, 1/2&minus;, 1&minus;, 0+, (3/2)−, (19/2−)

{| class="infobox" style="float: left;"<!-- outer table, show as infobox -->
|- <!-- iso table, with spin -->
| Table 1: SPIN table
{| class="wikitable" cellpadding=1 border=1 style="text-align: center; width: 100%; border-collapse: collapse; margin: 0; padding: 0;"
|- <!-- FIVE columns -->
! [[Isotope|Iso&shy;tope]]
! [[Natural abundance|Abun&shy;dance]]
! [[Nuclear spin|Spin]]
! [[Half-life]]
! [[Radioactive decay|Decay mode]]

|-
|
| %
| 1/2+
| colspan=2 |  stable

|-
|
|
|
|
| 1

|-
| rowspan=2 |
| rowspan=2 |
| rowspan=2 |
| rowspan=2 |
| 1
|-
| 2

|}
|}{{clear}}

====Table 2: When stable isotopes only, use simplified table====
<div class="floatright">{{Infobox element/element navigation|symbol=Mg|sectionheader=no}}</div>
When ''all listed isotopes'' are stable, we can use a simplified header: remove column Decay mode. Note that the spin value is added.
* Currently for isoboxes: boron, bromine, helium, lithium, magnesium, neon, oxygen. This list may change, since editors are free to reasonably add/remove nonstable isotopes (IOW, when a nonstable isotope row is added, this simple form can not be used any more. Also,  the other way around).

{| class="infobox" style="float: left;"<!-- outer table, show as infobox -->
|- <!-- iso table, with spin -->
| Table 2: ALL STABLE
{| class="wikitable" cellpadding=1 border=1 style="text-align: center; width: 100%; border-collapse: collapse; margin: 0; padding: 0;"
|- <!-- FOUR columns -->
! [[Isotope|Iso&shy;tope]]
! [[Natural abundance|Abun&shy;dance]]
! [[Nuclear spin|Spin]]
! [[Half-life]]

|-
|
| %
| 1/2+
| stable

|-
|
| %
| 3/2+
| stable
|}
|}{{clear}}

====Discuss 'spin' column====


===Table 3: Add 'from [[decay chain]]' (when unstable)===
<div class="floatright">{{Infobox element/element navigation|symbol=Ra|sectionheader=no}}</div>
Double sharp: "For the unstable elements past Bi, I would want a detail on where each natural isotope comes from in the radioactive decay chain, like I did in text at [[Radium#Isotopes]]."
*<sub>84</sub>Po - E118(?), (+ Tc?, Pm?)

:Parameter: {{para|chain}}
:One value for every unstable isotope (row).
:Possible values: &lt;blank>, thorium-232, uranium-235, uranium-238, neptunium-237, ...

{| class="infobox" style="float: left;"<!-- outer table, show as infobox -->
|- <!-- iso table, with spin -->
| CHAIN table
{| class="wikitable" cellpadding=1 border=1 style="text-align: center; width: 100%; border-collapse: collapse; margin: 0; padding: 0;"
|- <!-- SIX columns -->
! [[Isotope|Iso&shy;tope]]
! From [[decay chain|decay chain]]
! [[Natural abundance|Abun&shy;dance]]
! [[Nuclear spin|Spin]]
! [[Half-life]]
! [[Radioactive decay|Decay mode]]

|-
|
| uranium-235
| %
| 1/2+
| colspan=2 | stable

|-
|
|
|
|
|
| 1

|-
| rowspan=2 |
| rowspan=2 | uranium-238
| rowspan=2 | %
| rowspan=2 |
| rowspan=2 |
| 1
|-
| 2

|}
|}{{clear}}

====Discuss 'chain' column====


===Table 4: Add 'from', '1st-when', '1st-who' (synthetic heavies)===
<div class="floatright">{{Infobox element/element navigation|symbol=Lr|sectionheader=no}}</div>
Double sharp: "For the most unstable superheavy elements from Lr onwards at the cutting edge of modern science, I would want to know where each isotope comes from, when it was synthesised first, and who did it. So once we go beyond the things covered in the main infobox, I am not sure if we can add anymore, because the needs of each element are a little bit different; but if we are splitting it out, then I would think that it ought to go into some more detail."
* Lr - E121+
:Columns added:
:{{para|'''from'''}}: isotope(s) synthesised from.
:Values: &lt;blank>, Cm-249 or <sup>248</sup>Cm 
:{{para|'''1st-when'''}}: date of first synthesis
:Values: &lt;blank>, year (preferably), full date (if needed)

:{{para|'''1st-who'''}}: first synthesis person or institute
:Values: &lt;blank>, name/institute (usually wikilinked)
:{{para|'''iso-note'''}}: longer note in extra subrow, over multiple columns.
:Values: &lt;omit>, freetext. Should be used scarcely.

{| class="infobox" style="float: left;"<!-- outer table, show as infobox -->
|-
| SYN table
{| class="wikitable" cellpadding=1 border=1 style="text-align: center; width: 100%; border-collapse: collapse; margin: 0; padding: 0;"
|- <!-- EIGHT columns -->
! rowspan=2 | [[Isotope|Iso&shy;tope]]
! rowspan=2 | [[Natural abundance|Abun&shy;dance]]
! rowspan=2 | [[Nuclear spin|Spin]]
! colspan=3 | Synthesis
! rowspan=2 | [[Half-life]]
! rowspan=2 | [[Radioactive decay|Decay mode]]

|-
! from 
! first
! first by

|-
|
|
|
|
|
|
|
| colspan=2 | stable

|-
|
|
|
| <sup>mn</sup>Xx
| 1949
| Seaborg
|
| 1

|-
| rowspan=2 |
| rowspan=2 |
| rowspan=2 | 
| rowspan=2 | <sup>249</sup>Cf
| rowspan=2 | 1964
| rowspan=2 | JINR
| rowspan=2 |
| 1
|-
| 2

|-
| rowspan=2 | <sup>123</sup>Qz
|
|
| <sup>224</sup>Wp<!-- Wikipedium -->
| 2016
| DPHL <!-- DePiep Home Laboratories. Actually WP:OR. -->
|
| 1
|-
| colspan=7 | <small>(long iso-note demo)</small> Discovered by accident. Source was polluted with <sup>237</sup>Fy

|}
|}{{clear}}

====Discuss 'from, '1st-' columns====
Q: Would this cover the existing table in [[Berkelium#Isotopes]]?
Q: Should this table also have the 'from chain' column?

===Discuss this setup in general===

==Navigation==
* {{lts|Infobox element isotopes}}
* {{clc|Infobox element isotopes templates}}
* {{lts|Infobox element}}

{{Index to chemical element pages |state=uncollapsed}}

* {{t links|Index to chemical element pages/sandbox}}