Editing 2639: Periodic Table Changes
Revision as of 11:37, 30 June 2022 by 172.70.162.5 (talk) (→Explanation: I've tried to correct a 'because' misunderstanding, but then it got complex, and maybe I've introduced some further errors when I tried to shortcut it back down again and not be so long as I had it at one point of editing.)
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