The correct order of and complex species based on the number of unpaired electrons present is: [2025]

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Q.
The correct order of ${[{FeF}_{6}]}^{3 -}, {[{CoF}_{6}]}^{3 -}, [{Ni(CO)}_{4}]$ and ${[Ni(CN)_{4}]}^{2 -}$ complex species based on the number of unpaired electrons present is: [2025]

Solution

Q.
The correct order of ${[{FeF}_{6}]}^{3 -}, {[{CoF}_{6}]}^{3 -}, [{Ni(CO)}_{4}]$ and ${[Ni(CN)_{4}]}^{2 -}$ complex species based on the number of unpaired electrons present is: [2025]

1 ${[{FeF}_{6}]}^{3 -} > {[{CoF}_{6}]}^{3 -} > {[{Ni(CN)}_{4}]}^{2 -} > [{Ni(CO)}_{4}]$

2 ${[Ni(CN)_{4}]}^{2 -} > {[{FeF}_{6}]}^{3 -} > {[{CoF}_{6}]}^{3 -} > [Ni(CO)_{4}]$

3 ${[{CoF}_{6}]}^{3 -} > {[{FeF}_{6}]}^{3 -} > [Ni(CO)_{4}] > {[Ni(CN)_{4}]}^{2 -}$

4 ${[{FeF}_{6}]}^{3 -} > {[{CoF}_{6}]}^{3 -} > {[{Ni(CN)}_{4}]}^{2 -} = [Ni(CO)_{4}]$

Ans.
(4)

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Solution

Q. The correct order of [FeF6]3-,[CoF6]3-,[Ni(CO)4] and [Ni(CN)4]2- complex species based on the number of unpaired electrons present is: [2025]

1 [FeF6]3->[CoF6]3->[Ni(CN)4]2->[Ni(CO)4]

2 [Ni(CN)4]2->[FeF6]3->[CoF6]3->[Ni(CO)4]

3 [CoF6]3->[FeF6]3->[Ni(CO)4]>[Ni(CN)4]2-

4 [FeF6]3->[CoF6]3->[Ni(CN)4]2-=[Ni(CO)4]

Ans. (4)

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Q.
The correct order of ${[{FeF}_{6}]}^{3 -}, {[{CoF}_{6}]}^{3 -}, [{Ni(CO)}_{4}]$ and ${[Ni(CN)_{4}]}^{2 -}$ complex species based on the number of unpaired electrons present is: [2025]

1 ${[{FeF}_{6}]}^{3 -} > {[{CoF}_{6}]}^{3 -} > {[{Ni(CN)}_{4}]}^{2 -} > [{Ni(CO)}_{4}]$

2 ${[Ni(CN)_{4}]}^{2 -} > {[{FeF}_{6}]}^{3 -} > {[{CoF}_{6}]}^{3 -} > [Ni(CO)_{4}]$

3 ${[{CoF}_{6}]}^{3 -} > {[{FeF}_{6}]}^{3 -} > [Ni(CO)_{4}] > {[Ni(CN)_{4}]}^{2 -}$

4 ${[{FeF}_{6}]}^{3 -} > {[{CoF}_{6}]}^{3 -} > {[{Ni(CN)}_{4}]}^{2 -} = [Ni(CO)_{4}]$

Ans.
(4)