question_answer

  (i) Using valence bond theory, predict the geometry and magnetic character of . (ii) Among octahedral and tetrahedral crystal fields, in which case the magnitude of crystal field splitting is larger?                                                                                                                                                                                       [1]

Answer:

  (i) is a weak ligand, hence 3d' electrons remain unpaired. Geometry : tetrahedral. Magnetic character paramagnetic due to unpaired electrons Magnetic moment                                   [2] (ii) Crystal field splitting in tetrahedral(Crystal field splitting in octahedral) Thus, magnitude of crystal field splitting in octahedral crystal field is larger.                     [1]