What is the oxidation state of rhodium in pentaamminebromorhodium bromide, [Rh(NH₃)₅Br]Br₂?

Question

Quizplus · Accepted Answer

The compound is [Rh(NH3)5Br]Br. In this coordination complex, ammonia (NH3) acts as a neutral ligand (with no charge), and bromine (Br) inside the square brackets acts as a monodentate ligand with a -1 charge. The bromide ion outside the square brackets also contributes a -1 charge. To balance the charges, the oxidation state of Rhodium (Rh) must be +3, as the complex overall must be neutral before considering the external bromide ion.

What Is the Oxidation State of Rhodium in Pentaamminebromorhodium Bromide