Google has added a 3D and AR based periodic table to the search results. If you search for [periodic table] and look at the right side rail, you will see a way to "explore" the periodic table.
There are many different versions of the periodic table, but one among them reigns supreme. Michelle Francl ponders on why chemists put elements in boxes. The postcard to me began '53 90.8.92.g.1.t'.
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