Wikidata:Property proposal/atomic mass
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atomic mass[edit]
Originally proposed at Wikidata:Property proposal/Natural science
Withdrawn
| Description | Mass of an atom. Its unit is the unified atomic mass units (symbol: u, or Da) where 1 unified atomic mass unit is defined as 1⁄12 of the mass of a single carbon-12 atom, at rest. |
|---|---|
| Represents | material (Q214609) > mechanical property (Q5725005) > atomic mass (Q3840065) |
| Data type | Quantity |
| Template parameter | This proprety request is part of the project of creating an infobox for materials |
| Domain | Physics, Materials |
| Allowed values | Any number. |
| Allowed units | dalton (Q483261) |
| Example 1 | chromium (Q725) → 51,9961 ± 0,0006 u |
| Example 2 | titanium (Q716) → 47,867 ± 0,001 u |
| Example 3 | carbon (Q623) → 12,01074 ± 0,0008 u |
| Source | w:Atomic mass |
| Planned use | Creating an infobox for materials |
| See also | mass (P2067) |
Motivation
This proprety request is part of the project of creating an infobox for materials. It could be also be usefull to switch element infoboxes to Wikidata.
Discussion
Support David (talk) 07:36, 28 July 2018 (UTC)
Oppose we already have mass (P2067) for this. It's not ideal at this moment, because there is no qualifiers in many items (e.g. for chemical compounds there is only monoisotopic mass added without any qualifier that tells that this is monoisotopic mass not exact mass). Also, I don't see any arguments for creating new property in this proposal. Wostr (talk) 14:02, 28 July 2018 (UTC)
- I was a little bit surprised that it didn't exist. Do you mean you use mass in elements infoboxs ? --Thibdx (talk) 17:57, 28 July 2018 (UTC)
- No, we (pl.wiki) don't. In fact, we don't use any other WD parameter than Commons category in chemistry infoboxes in pl.wiki right now (I'm planning to use some of WD data in Mineral infobox in pl.wiki). We have some checks established (infobox is checking whether identifier X is the same in infobox and WD – this is helping in curating data in infoboxes and WD as well), because chemical compounds in WD were uploaded by bots rather carelessly and now we have a nice mess and a lot of items to curate. I tried to add checking of molar mass (molar mass is added using mass (P2067) too) to pl.wiki chemical compound infoboxes, but unfortunately the molar mass in WD is not the same as should be used in infoboxes (monoisotopic mass vs exact mass). Apparently, io.wiki and ru.wiki use mass (P2067) in their chemistry infoboxes. Wostr (talk) 07:13, 29 July 2018 (UTC)
- I was a little bit surprised that it didn't exist. Do you mean you use mass in elements infoboxs ? --Thibdx (talk) 17:57, 28 July 2018 (UTC)
Comment I'm not necessarily opposed to this but there are complications - see previous (not done) proposals for a variety of different versions of this property: Wikidata:Property proposal/standard atomic weight, Wikidata:Property proposal/conventional atomic weight, Wikidata:Property proposal/relative atomic mass. Given that there are only a little over 100 items such properties could be applied to, I think the better approach is using existing properties with appropriate qualifiers etc. ArthurPSmith (talk) 13:09, 30 July 2018 (UTC)
