MCQ
Which of the following is correct option?
- A$_{21}Sc = [Ar]\, 3d^1\, 4s^2$
- B$_{89}Ac = [Rn]\, 5f^0 \,6d^1 \,7s^2$
- C$_{29}Cu = [Ar] \,3d^{10} \,4s^1$
- ✓All are correct
✓
Answer
Correct option: D.
All are correct
d
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