Thirty years of teaching chemistry and not one student noticed that Mendeleev was secretly training them for competitive Tetris. The periodic table's blocks fit together with suspicious perfection—alkali metals stacking neatly against halogens like that straight piece you save for a perfect clear. No wonder chemists get so excited about electron configurations—they're just optimizing their next move. And here I thought students were falling asleep during valence shell lectures when they were actually plotting their Tetris strategy.
Is Periodic Table A Tetris?

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