Number of complexes with even number of electrons in orbitals is
, , , ,

Question

Number of complexes with even number of electrons in  orbitals is 
, , , ,

Canvas Classes · Accepted Answer

Strategy:
 Determine the -electron count for each metal ion and distribute the electrons into the  and  orbitals assuming high-spin octahedral complexes (since  is a weak field ligand). Count the electrons in the  level.

Step 1: Evaluate each complex
- :  (). High-spin configuration: . Electrons in  = 4 (Even).
- :  (). High-spin configuration: . Electrons in  = 5 (Odd).
- :  (). Despite being an aqua complex,  with water is actually diamagnetic low-spin () owing to high , but even if considere

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