Template:Periodic table legend/Occurrence-unk2017
| Primordial | From decay | Synthetic | Claimed | Predicted | Border shows |
Template documentation- /Occurrence-unk2017: development, proposal. Changes undiscovered element and white-category i predicted. Sept 2017
- Jan 2018: add Changed (prelim border), reduce grey bg into near white (is not the "unk-grey")
- todo research old colors used (purple? brown?).
- three line colors: #ddd (same)