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NEET2006Chemistryd and f Block ElementsActual

Which of the following have maximum number of unpaired electrons?

Options

  1. AFe ³⁺
  2. BFe ²⁺
  3. CCo ²⁺
  4. DCo ³⁺

Correct answer

A. Fe ³⁺

Step-by-step solution

Fe ³⁺ [ Ar ] 3 d^5 4 s^0 Number of unpaired electrons =5 .

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