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- Jul 2, 2007
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Is there any real method to properly calculate transition metal ionic charges without memorizing them? Like for example we all know group 1 elements produce +1, group 2 produces +2, halogens produce -1. I understand that Iron first gets rid of its two 4S electrons to produce a +2 and then another one to form a +3 and gain itself a stable half filled 3d subshell. but what about elements like Copper? how is it that copper produces +1 & +2?