Chemistry - Coordination Chemistry Question with Solution | TestHub

The complex trans-diiodobis(ethylenediamine)cobalt(III) nitrate is $[Co(en{)}_2{I}_2]N{O}_3$. The coordination number of Co(III) is 6, so the geometry is octahedral. Ethylenediamine (en) is a bidentate ligand and occupies two adjacent positions, while two iodide ligands must be present at opposite (trans) positions. Among the given options, only Option D shows the two I⁻ ligands opposite to each other.