The two compounds sulphato penta-ammine cobalt (III) bromide and sulphato penta-ammine cobalt (III) chloride represent:

Options

A. Linkage isomersm
B. Ionization isomerism
C. Coordination isomerism
D. No isomerism

Explanation

To solve the question regarding the two compounds, sulphato penta-ammine cobalt (III) bromide and sulphato penta-ammine cobalt (III) chloride, we need to analyze their structures and determine the type of isomerism they represent.

### Step-by-Step Solution:

1. **Identify the Components of the Compounds**:
- Both compounds contain the following components:
- Cobalt (Co) as the central metal atom.
- Amine (NH3) ligands, with 5 of them (indicated by "penta").
- A sulfate (SO4) group.
- An anionic species, which is either bromide (Br) in the first compound or chloride (Cl) in the second.

2. **Determine the Oxidation State of Cobalt**:
- In both compounds, cobalt is in the +3 oxidation state.

3. **Write the General Formula for Each Compound**:
- For sulphato penta-ammine cobalt (III) bromide:
\[ [Co(NH_3)_5(SO_4)]Br \]
- For sulphato penta-ammine cobalt (III) chloride:
\[ [Co(NH_3)_5(SO_4)]Cl \]

4. **Calculate the Overall Charge**:
- The overall charge of the coordination complex can be calculated as follows:
- For the first compound:
\[ +3 \, (\text{Co}) + 5 \times 0 \, (\text{NH}_3) - 2 \, (\text{SO}_4^{2-}) + x \, (\text{Br}) = 0 \]
This gives us \(x = +1\) for bromide.
- For the second compound:
\[ +3 \, (\text{Co}) + 5 \times 0 \, (\text{NH}_3) - 2 \, (\text{SO}_4^{2-}) + y \, (\text{Cl}) = 0 \]
This gives us \(y = +1\) for chloride.

5. **Analyze the Isomerism**:
- Both compounds have the same coordination sphere:
- \([Co(NH_3)_5(SO_4)]\) is common in both.
- The only difference is the anionic species (Br in one and Cl in the other).
- Since there are no different arrangements of ligands or any other types of isomerism (like geometric or optical), these compounds do not exhibit isomerism.

6. **Conclusion**:
- The two compounds represent **no isomerism**.

### Final Answer:
The two compounds sulphato penta-ammine cobalt (III) bromide and sulphato penta-ammine cobalt (III) chloride represent **no isomerism**.