Sarthaks Test
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Using valence bond theory, explain the following in relation to the complexes given below:

[Mn(CN)6]3– , [Co(NH3)6]3+, [Cr(H2O)6]3+ , [FeCl6]4–

(i) Type of hybridisation.

(ii) Inner or outer orbital complex.

(iii) Magnetic behaviour.

(iv) Spin only magnetic moment value.

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(i) d2sp3

(ii) Inner orbital complex

(iii) Paramagnetic

(iv) 3.87 BM

(i) sp3d2 

(ii) Outer orbital complex

(iii) Paramagnetic

(iv) 4.9 BM

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