What is the oxidation state of iron in [Fe(bpy)3]2+ ?

The oxidation state of iron in [Fe(bpy)3]2+ can be determined by considering the charge of the complex ion and the known charges of the ligands.

1. Identify the overall charge of the complex ion. In this case, the complex ion [Fe(bpy)3]2+ has a charge of +2.

2. Identify the charge of the ligands. The ligand bpy (bipyridine) is a neutral ligand, meaning it does not contribute to the overall charge of the complex ion.

3. Calculate the oxidation state of the metal. Since the overall charge of the complex ion is +2 and the ligands contribute 0 charge, the oxidation state of the iron (Fe) must be +2 to balance the charge.

So, the oxidation state of iron in [Fe(bpy)3]2+ is +2.