In electronic configuration of Cu and Cr,which of following is true?
Correct answer: C. 1 electron in 4s-orbital
- A. 3-d is half filled
- B. electrons in s-orbitals
- C. 1 electron in 4s-orbital
- D. 8 electrons in s-orbitals
Explanation
Option C is true for both copper and chromium. Both copper and chromium have electrons in their s-orbitals: Cu has 1 electron in the 4s orbital, and Cr has 1 electron in the 4s orbital.
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