Question

The IUPAC name of [Co(NH₃)₅(CO₃)]Cl is

• A. Pentaamminecarbonatocobalt (III) Chloride
• B. Carbonatopentamminecobalt (III) Chloride
• C. Pentaamminecarbonatocobaltate (III) Chloride
• D. Pentaammine cobalt (III) Carbonate Chloride

Answer 1

The Correct Option is A

The complex ion [Co(NH₃)₅(CO₃)] is named by first listing the ligands in alphabetical order. "Amine" is named before "carbonate" due to its alphabetical order. The oxidation state of cobalt is (III), and the chloride ion (Cl) is named at the end. Therefore, the correct IUPAC name is Pentaamminecarbonatocobalt(III) Chloride.

The correct answer is (A) : Pentaamminecarbonatocobalt (III) Chloride.