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Which of the following represents the formula for chloridodiaquatriammine cobalt (III) chloride?

1. [CoCl(NH3)3(H2O)2]Cl2
2. [CoCl(NH3)3(H2O)2]Cl2
3. [CoCl(NH3)3(H2O)2]Cl2
4. [CoCl(NH3)3(H2O)2]Cl2

Correct answer: [CoCl(NH3)3(H2O)2]Cl2

Solution

The given name 'Chloridodiaquatriammine cobalt (III) chloride' corresponds to the formula [CoCl(NH3)3(H2O)2]Cl2. The name indicates one chloride ligand, three ammonia ligands, two water ligands, and two counter chloride ions.

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