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Sep20-04, 06:45 PM
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Quote Quote by Gonzolo
Well, it could be argued that in magnets, the normals to each orbit are aligned (same z), while in all other materials, they are not (random z). Again, I don't claim this to be a sufficient explanation to a scientist, but it is one I that have seen in a (perhaps an elementary) physics textbook. I am not sure where exactly the theory fails, although it surely does at some point.
It fails because for an s-orbital, there are no prefered direction of symmetry. So even if they are all "alligned", you still get no net magnetic moment due to all of those "revolution" around the nuclei.