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COMEDK2019Chemistryd and f Block Elements

The number of unpaired electrons in Fe ³⁺ is

Options

  1. A2
  2. B3
  3. C4
  4. D5

Correct answer

D. 5

Step-by-step solution

Fe (26)= Ar 3 d⁶ 4 s² Fe ³⁺(23)=[ Ar ] 3 d⁵ 4 s⁰ Fe ³⁺= Number of unpaired electrons =5

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