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| 1. |
[Fe(H_(2)O)_(6)]^(3+)is strongly paramagnetic whereas [Fe(CN)_(6)]^(3-) is weakly paramagnetic. Explain. |
| Answer» Solution :In both the complexes, Fe is in +3 oxidation state with the configuration `3d^(5)`. `CN^(-)` is a strong ligand. In its presence, 3d electrons pair up leaving only ONE unpaired electron. The hybridisation is `d^(2)SP^(3)` forming inner orbital complex. `H_(2)O` is a WEAK ligand. In its presence, 3d electrons do not pair up. The hybridisation is `sp^(3)d^(2)` forming an OUTER orbital complex CONTAINING five unpaired electrons. Hence, it is stronglyparamagnetic. | |