Atomic number of `Mn , Fe CO and Ni ` are 25,26,27 and 28 respectively . Which of the following outer orbital octahedral complexes have same number of unpaired electrons ? `I. [MnCl_(6)]^(3-)" "II. [FeF_(6)]^(3-)` `III. [CoF_(6)]^(3-)" " IV. [Ni(NH_(3))_(6)]^(2+)`ltbrlt choose the correct code .A. `I and II `B. `II and IV `C. `I , III and IV `D. `I and III `

Atomic number of `Mn , Fe CO and Ni ` are 25,26,27 and 28 respectively

1.	Atomic number of `Mn , Fe CO and Ni ` are 25,26,27 and 28 respectively . Which of the following outer orbital octahedral complexes have same number of unpaired electrons ? `I. [MnCl_(6)]^(3-)" "II. [FeF_(6)]^(3-)` `III. [CoF_(6)]^(3-)" " IV. [Ni(NH_(3))_(6)]^(2+)`ltbrlt choose the correct code .A. `I and II `B. `II and IV `C. `I , III and IV `D. `I and III `
Answer» Correct Answer - D `[MnCl_(6)]^(3-) and [CoF_(6)]^(3-)` have same number of unpaired electrons .

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