The structures of four complex ions are given Each has Co 3 as the central ion The ligands are H 2 O, NH 3 , and oxalate ion, C 2 O 4 2 Determine which, if any, of these complex ions are isomers (geometric or optical) which, if any, are identical (that is, have identical structures) and which, if a...

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The structures of four complex ions are given. Each has Co 3+ as the central ion. The

Question:

The structures of four complex ions are given. Each has Co³⁺ as the central ion. The ligands are H₂O, NH₃, and oxalate ion, C₂O₄^2–. Determine which, if any, of these complex ions are isomers (geometric or optical); which, if any, are identical (that is, have identical structures); and which, if any, are distinctly different.

HN OX HN OH -Co+- OH (a) NH3 Co+- OH (c) OH2 ox -OH2 OX HO OH Co3+ HO OH2 (b) NH3 NH3 CO+ NH3 NH3 (d)