Lanthanides! Assemble!
All of the lanthanides, including the electron-disputed Lutetium.
Most are in their pure form...except Promethium. The promethium vial contains 5 grammes of Europium glow powder. The decay of Europium-151 produces 1 new atom of Promethium every week; so two years from now there will be a steady flow of about 140 atoms of Promethium at any given time.
Posted Jul 5, 2025, 11:55 AM UTC
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