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NEET levelSingle correct optionDifficulty 1 of 3as195

The number of unpaired electrons in the ion () in its ground state is

  1. A4
  2. B5
  3. C3
  4. D6

Answer: B

Fe is . loses the two electrons and one electron, giving , with one electron in each of five orbitals: 5 unpaired.
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