Periodic table of abbreviations

I just updated my earlier post on chemical element abbreviations by adding a table to visualize the groupings, a sort of periodic table of element abbreviations. See that post for details.

1. First letter
2. First two letters
3. First letter and next consonant
4. Initials of first and second syllables
5. Initials of first and third syllables
6. First and last letter
7. First letter and something else
8. Historical

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