Which element from the following possesses half-filled d-orbitals either in expected or in observed…

Which element from the following possesses half-filled d-orbitals either in expected or in observed electronic configuration?
  1. Fe
  2. Mn
  3. Ni
  4. Co

Solution

$\mathrm{Mn}$ (Observed and expected electronic configurations): $[\mathrm{Ar}] 3 \mathrm{~d}^5 4 \mathrm{~s}^2$

Asked in: MHT CET 2023 (12 May Shift 2)

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