Reaction of with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of electrons present in -orbitals of the product is

Question

Reaction of  with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of electrons present in -orbitals of the product is

Canvas Classes · Accepted Answer

Strategy:
 Track the oxidation state changes when reacting with excess ammonia and air/oxygen to identify the final complex and electron configuration.

Step 1: Write the reaction
When pink  is treated with excess aqueous ammonia, it formally replaces the ligands. In the presence of oxygen, the air oxidizes  to  because the  ammine complex is extremely stable.
Final Product: .

Step 2: Determine electrons in 
 is a  ion.
Because  is a strong field ligand, this complex is low-spin and diamagnetic

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