Find the number of unpaired electrons for copper in ground state configuration.

Find the number of unpaired electrons for copper in ground state configuration.
  1. 1
  2. 2
  3. 3
  4. 4

Solution

$\mathrm{Cu}(\mathrm{Z}=29):[\mathrm{Ar}] 3 \mathrm{~d}^{10} 4 \mathrm{~s}^1$ $\therefore \quad$ No. of unpaired electrons $=1$

Asked in: MHT CET 2023 (14 May Shift 2)

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