Philosophical Research:Items 13,000 to 14,000
This is the primary index of numbered Items, post-prototype. If you create a new Item in this number range, add it to this list. (Note that Item pages should not be added directly to the Category, only Item pages links.)
Unfinished Items
- periodic table of elements
- Hydrogen (H)
- Helium (He)
- Oganesson (Og)
- (... reserved for future element discoveries, unless there is good evidence heavier elements stop being possible before 200)
- island of stability