Three arrangements are shown for the complex [CoBr2(NH3)2(en)]^+. Which one is wrong statement? [SEE — Coordination Compounds Chemistry Question

💡 Solution & Explanation

Step 1: Evaluate the symmetry of each structure: structure (I) has two trans-Br ligands, giving it a plane of symmetry (optically inactive). Structure (III) has two trans-NH3 ligands, which also gives it a plane of symmetry (optically inactive). Step 2: Structure (II) has both Br and NH3 in cis positions, lacking any plane of symmetry (optically active). Step 3: Since structure (III) is optically inactive, any statement asserting that both II and III are optically active is incorrect. Thus, statement (b) is the wrong statement.+ complexes displaying different ligand geometries.]