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The periodic table as shown in the English wikipedia (enwiki) uses categories to mark the metallicity of the elements. Each category has its legend color. Both the label "category" and its associated color are editorial choices (chosen by enwiki editors).
The categorisation is based on science, WP:RS. The colors used are chosen wiki-local.
Periodic table
[edit source]| Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hydrogen & alkali metals |
Alkaline earth metals | Triels | Tetrels | Pnictogens | Chalcogens | Halogens | Noble gases | ||||||||||||
| Period |
|||||||||||||||||||
| 2 | |||||||||||||||||||
| 3 | |||||||||||||||||||
| 4 | |||||||||||||||||||
| 5 | |||||||||||||||||||
| 6 | 1 asterisk | ||||||||||||||||||
| 7 | 1 asterisk | ||||||||||||||||||
| 1 asterisk | |||||||||||||||||||
| 1 asterisk | |||||||||||||||||||
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Primordial From decay Synthetic Border shows natural occurrence of the element
Standard atomic weight Ar, std(E)[1]
- Ca: 40.078 — Abridged value (uncertainty omitted here)[2]
- Po: [209] — mass number of the most stable isotope
On commons
[edit source]- See
- commons:Category:Periodic table using enwiki color scheme
- commons:Category:Periodic tables using the enwiki classifications
Talk central
[edit source]Discussions are at WT:ELEMENTS. You are invited.