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Using crystal field theory, draw energy level diagram, write electronic configuration of the central metal atom/ion and determine the magnetic moment value in the following
(a) `[CoF_(6)]^(3-), [Co(H_(2)O)_(6)]^(2+), [Co(CN)_(6)]^(3-)`
(b) `FeF_(6)^(3-), [Fe(H_(2)O)_(6)]^(2+), [Fe(CN)_(6)]^(4-)`

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To solve the problem, we will analyze each complex using Crystal Field Theory, draw the energy level diagrams, write the electronic configurations of the central metal ions, and determine the magnetic moment values. ### Part (a): Cobalt Complexes 1. **Complex: `[CoF6]^(3-)`** - **Oxidation State of Co**: In this complex, Co is in the +3 oxidation state (since F is -1 and there are 6 F atoms). - **Electronic Configuration of Co³⁺**: The electronic configuration of Co (Z=27) is [Ar] 3d⁷ 4s². For Co³⁺, we remove 2 electrons from 4s and 1 from 3d: - Co³⁺: [Ar] 3d⁶ ...
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[Fe(H_(2)O)_(6)]^(2+) and [Fe(CN)_(6)]^(4-) differ in :

[Fe(H_(2)O)_(6)]^(2+) and [Fe(CN)_(6)]^(4-) differ in :

[Fe(H_(2)O)_(6)]^(3+) and [Fe(CN)_(6)]^(3-) differ in

The magnetic moment of a complex ion is 2.83BM The complex ion is (a) [Cr(H_(2)O)_(6)]^(3+) (b) [Cu(CN)_(6)]^(2-) (c ) [V(H_(2)O)_(6)]^(3+) (d) [MnCI_(4)]^(2-) .

The magnetic moment of a complex ion is 2.83BM The complex ion is [Cr(H_(2))O)_(6)]^(3+) (b) [Cu(CN)_(6)]^(2-) (c ) [V(H_(2)O))_(6)]^(3+) (d) [MnCI_(4)]^(2-) .

Same number of unpaired electron is observed in which of the following complexes (a) [MnCl_(6)]^(3-) (b) [Fe(CN)_(6)]^(3-) ( c) [CoF_(6)]^(3-) (d) [Ni(NH_(3))_(6)]^(2+)

Give the electronic configuration of the following complexes on the basis of crystal field splitting theory. [CoF_(6)]^(3-), [Fe(CN)_(6)]^(4-) and [Cu(NH_(3))_(6)]^(2+) .

Which complex of the following pairs has the larger value of Delta_(0) (i) [Co(CN)_(6)]^(3-) and [Co(NH_(3))_(6)]^(3+) (ii) [Co(NH_(3))_(6)]^(3+) and [CoF_(6)]^(3-) (iii) [Co(H_(2)O)_(6)]^(2+) and [Co(H_(2)O)_(6)]^(3+) .

How many of the given complexes follow E.A.N rule ? (a) [Fe(CO)_(5)] (b) [Co_(2)(CO)_(8)] ( c) [Fe(C_(5)H_(5))_(2)] (d) K_(3)[Fe(CN)_(6)] ( e) [Fe(NO)_(2)(CO)_(2)] (f) [CoF_(6)]^(4-)

Predict the hybridisation and geometry of the following complexes. (a) [Fe(CN)_(6)]^(3-) " " (b)[MnBr_(4)]^(2-)" " (c ) [Fe(H_(2)O)_(6)]^(2+)" " (d) [Co(SCN)_(4)]^(2-)