Wikipedia:WikiProject Elements/PTG/categories/2021b
{{Periodic table legend}}: themen "error" not recognised
- Recognised themes are:
- Category
- Category compact
- State of matter
- Occurrence
- Janet category compact
- Block
- Valence
- Goldschmidt
- Age of discovery
- Metal–nonmetal (note: use ndash)
- (All names are case-insensitive: A=a)
Summary of changes from 2020
- ?
Blind PT
Template:Periodic table/blind/2021b
Hex neighborhood
_-_bordering_colors_check_(hexagonals).svg){kind=link}
| category | number of borders |
|---|---|
| AM | 2 |
| AEM | 4 |
| LN | 3 |
| AN | 3 |
| TM | 4 |
| PTM | 3 |
| MOID | 3 |
| ONONM | 3 |
| X | 4 |
| NG | 1 |
| (AM in LeftStep) | 3 |
| (ONONM in LeftStep) | 4 |
| (NG in LeftStep) | 3 |
Element color 2021b
- Alkali metals → ?
- Alkaline earth metals → ?
- Lanthanides → ?
- Actinide → ?
- Transition metal → ?
- Post-transition metal → ?
- Metalloid → ?
- Other nonmetal → ?
- Halogen → ?
- Noble gas → ?
- Unknown chemical properties → ?
- SoM
- solid → ?
- liquid → ?
- gas → ?
- phase unknown → ?
Analysis & issues
- todo