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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 hybridization 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 hybridization is `sp^(3)d^(2)` forming an outer orbital complex containing five unpaired electrons. Hence, it is STRONGLY PARAMAGNETIC | |