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Question 21089
NEET Chemistry · Hard

Structure of Atom: Orbital filling MCQ

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Orbital fillingHardQuestion 21089

Question

The number of unpaired electrons in Cu2+Cu^{2+} is:

  1. A
    1
    Correct
  2. B
    0
  3. C
    2
  4. D
    9

Correct answer

1

Explanation

Cu is [Ar]3d10^{10}4s1^1; Cu2+^{2+} becomes [Ar]3d9^9.

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