Chemistry, asked by jit88, 6 months ago

why chromium and copper shows abnormal electronic configuration ?

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Answered by sakshamsrivastava653

Answer:

There are two main exceptions to electron configuration: chromium and copper. In these cases, a completely full or half full d sub-level is more stable than a partially filled d sub-level, so an electron from the 4s orbital is excited and rises to a 3d orbital.

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