Another generalization that we can make about almost all previous periodic tables is that each element appears exactly once. I would argue that this reflects a somewhat Platonist approach on the part of chemists - they are considering the elements in an idealized elemental form, and so each element has one place on the table, and each place has one element. If you're an earth scientist, that's not so . . . .


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Railsback's main page about the Earth Scientist's Periodic Table of the Elements and Their Ions
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Railsback's main web page
UGA Geology Department web page

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