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

13000. periodic table of elements
13001. (... 13,001: live)
13002. Helium (He)
13118. Oganesson (Og)
13200. (... reserved for future element discoveries, unless there is good evidence heavier elements stop being possible before 200)
13201. island of stability

Posted Items

12000. S–617 (pronounced S–617) [S] (pronounced [S]) hydrogen (H) 1:(-)1:(-)1

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