Clicking on the table will lead you to my elements- information chart on my old school’s web site. Trying to edit html for tables on WordPress is too tedious! To view the Wiki periodic table below, you could click here.
The little bread bag clips are now made out of cardboard. But we had saved the coloured plastic ones. Together with those and leftover plexiglass from COVID, we made a periodic table highlighting life’s essential elements (in green).
To break the monotony of rectangular periodic tables:
Here’s one from Eric Scerri. Add period’s n (principal quantum number) to angular momentum quantum # , l ,of corresponding s, p, d or f orbital & you get this neat arrangement, preserving triads & adding 1 more. See Journal of Chemical Education article for more details.
Indeed, the n+l rule has little meaning in chemistry. However, since the ruleoccurs in all textbooks and is absorbed by all students and teachers, it will dieout only very slowly.Icon of Chemistry: The Periodic System of Chemical Elements in the New Century†
And finally a dream table for stamp collectors who are chemists.