Question

Electronic configuration of Chromium and Copper
Cr and Cu ​

Answer 1

Answer : The 3d sub-shell is filled after the 4s sub-shell, so most of the elements have a full 4s sub-shell, 4s2. But note that chromium and copper have 4s1 electron configurations, not 4s2. This is to allow either a half-filled or a filled d sub-shell to be made – Cr has 3d5 4s1 and Cu has 3d10 4s1.

Answer 2

Answer:

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. → Electronic configuration of chromium (Cr) -[Ar]4s13d5. → Electronic configuration of copper (Cu) -[Ar]4s13d10.

Explanation:

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