InterviewSolution
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InterviewSolution
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Which of the following statement(s) is / are correct ?A. `[Co(NH_(3))_(6)]^(3+), [Co(CN)_(6)]^(3-) and [Co(NO_(2))_(6)]^(3-)` are diamagnetic involving `d^(2)sp^(3)` hybridisation.B. `[Zn(NH_(3))_(4)]^(2+),[FeCl_(4)]^(-) and [Ni(CO)_(4)]` are diamagnetic involving `sp^(3)` hybridisation.C. The magnetic moment of `[Fe(H_(2)O)_(6)]^(3+)` is 5.92 BM and that of `[Fe(CN)_(6)]^(3-) ` is 1.73D. The magnetic moment of `K_(4)[MnF_(6)] and K_(3)[FeF_(6)]` are same . |
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Answer» Correct Answer - A::C::D (A) All are diamagnetic and inner orbital complexes because all ligands are strong field ligands. (B) `Fe^(3+) n=5,mu=sqrt(5(+2))~~5.92` with `H_(2)O`, so `[FeCl_(4)]^(-)` is diamagnetic. ( C) `Fe^(3+)n=5,mu=sqrt(5(5+2))~~5.92` with `H_(2)O`. `Fe^(3+) n=1,mu=sqrt(3)=1.73` with `CN^(-)`. (D) `Mn^(2+)(3d^(5)) and Fe^(3+)(3d^(5))` have same number of unpaired electrons i.e. 5 with weak field ligands, `F^(-)`. |
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