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Speaking without any domain knowledge, I think it has to do with "what can support the complexity required for life?". I would think it requires molecules that
by flogic 16y ago
Speaking without any domain knowledge, I think it has to do with "what can support the complexity required for life?". I would think it requires molecules that can do interesting things while at the same time survive their environment long enough to do those things.
- frisco 16y agoIt has to do with electronegativity and number of free electrons. Both phosphorous and arsenic can make three bonds, and arsenic is only very slightly less electronegative than phosphorous.
- flogic 16y agoI thought free electrons might have something to do with it, but I'm making do with an only slightly better than high school education in chemistry here.