Why Cu and Cr shows exceptional configuration?
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Since, every element prefers tohave a stable configuration hence one electron from 4s orbital will gettransferred into the 3d orbital. Thus, it has an exceptionalconfiguration. Similarly, in the case of Cu (29) 3d orbital has 9 electrons and 4s has 2. ... Why is the electronic configuration of CU and CR differen
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To attain extra stability, the electrons arrange themselves in the orbitals in a way that they become half filled or completely filled.
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