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by Symmetry 3007 days ago
Water is on the order of 50 parts per million in that part of Venus's atmosphere which is pretty dry compared to Earth but still straightforward to extract from the air. In Venus's atmosphere you basically have all the Hydrogen, Nitrogen, Carbon, Oxygen, Sulfur, and Argon you need and pretty good access to Helium, Neon, Chlorine, and Florine. It's everything else that's the problem, like Silicon or metals.