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This is a place to share greentexts and witness the confounding life of Anon. If you're new to the Greentext community, think of it as a sort of zoo with Anon as the main attraction.

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Anon describes experience (lemmy.ml)

submitted 6 days ago by [email protected] to c/[email protected]

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[–] [email protected] 5 points 5 days ago

The table that does it that way is a complete mess but I guess it was a good idea and got some things right.

They first started doing it with valence shells in 1864, Mendeleev had a pretty close one based on atomic weights in 1871 and correctly predicted that there were missing elements based on valences + weights. The atomic numbers which determine the valences appear to have been discovered about 40 years later.

I guess you are correct but I think the question was about the modern table.