The compound triamminediaquachlorido cobalt (111) chloride is correctly represented according to the latest IUPAC rules as

Options

A. `[Co(CI)(NH_(3))_(3)(H_(2)O)_(2)]CI_(2)`
B. `[Co(NH_(3))_(3)(H_(2)O)_(2) Ci]CI_(2)`
C. `[Co(H_(2)O)_(2)(NH_(3))_(3)]CI_(3)`
D. `[Co(H_(2)O)_(2)CI(NH_(3))_(3)]CI_(3)`

Answer

To represent the compound triamminediaquachloridocobalt(III) chloride according to the latest IUPAC nomenclature rules, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Ligands and Their Counts**:
- The name "triamminediaquachlorido" indicates the presence of:
- **Triamine**: 3 ammonia (NH3) ligands
- **Diaqua**: 2 water (H2O) ligands
- **Chlorido**: 1 chloride (Cl-) ligand

2. **Determine the Central Metal and Its Oxidation State**:
- The central metal is cobalt (Co).
- The oxidation state of cobalt is indicated as (III), meaning it is in the +3 oxidation state.

3. **Construct the Coordination Sphere**:
- The coordination sphere will consist of the central metal cobalt surrounded by the ligands.
- The ligands are arranged in alphabetical order based on their names (ignoring the prefixes):
- Amine (NH3)
- Aqua (H2O)
- Chlorido (Cl-)

4. **Write the Formula for the Coordination Complex**:
- The coordination complex can be written as:
- [Co(NH3)3(H2O)2(Cl)]^+3
- This indicates that cobalt is coordinated with three NH3, two H2O, and one Cl-.

5. **Account for the Counter Ions**:
- Since the overall charge of the coordination complex is +3, we need to balance this with three chloride ions (Cl-) as counter ions to make the compound neutral.
- Therefore, the complete formula will be:
- [Co(NH3)3(H2O)2Cl]Cl3

6. **Final Representation**:
- According to IUPAC nomenclature, the final representation of the compound is:
- [Co(NH3)3(H2O)2Cl]Cl3

### Final Answer:
The compound triamminediaquachloridocobalt(III) chloride is correctly represented as [Co(NH3)3(H2O)2Cl]Cl3.