Select the correct match here

Options

A. `[Co(o x)(H_2O)(NH_3)]Br` Optical isomerism
B. `[Cr(SCN)(H_2O)_(3)(en)](C_2O_4)` Ionization isomerism
C. `[ZnBr(CN)(SCN)(NH_3)]^(-)`
D. `[CoBrCl(H_2O)_(4)][Ag(CN)_(2)]`

Answer

To solve the question of selecting the correct match regarding coordination compounds and their isomerism, we will analyze the options step by step.

### Step-by-Step Solution:

1. **Understanding Coordination Compounds**:
Coordination compounds consist of a central metal atom bonded to surrounding ligands. The arrangement of these ligands can lead to different types of isomerism, including geometric and optical isomerism.

2. **Identifying Types of Isomerism**:
- **Optical Isomerism**: Occurs when a compound can exist in two forms that are mirror images of each other (enantiomers).
- **Geometric Isomerism**: Involves different spatial arrangements of ligands around the central metal atom. This can be further classified into facial (fac) and meridional (mer) isomers in octahedral complexes.
- **Linkage Isomerism**: Occurs when a ligand can coordinate to the metal in more than one way.
- **Hydration Isomerism**: Involves isomers that differ in the number of water molecules coordinated to the metal.

3. **Analyzing the Given Options**:
- **Option A**: Cobalt oxalate complex with water and ammonia ligands. This complex can show geometric isomerism (fac and mer) but not optical isomerism due to the presence of identical ligands.
- **Option B**: Zinc complex with different ligands. Zinc, being a d10 metal, does not show optical isomerism as it does not have a chiral center.
- **Option C**: A complex with coordination isomers involving Br, Cl, and CN ligands. This can lead to coordination isomerism as the ligands can be arranged differently.
- **Option D**: This option is the one that correctly identifies coordination isomerism.

4. **Conclusion**:
After analyzing the options, we find that **Option C** correctly matches the concept of coordination isomerism. Therefore, the correct answer is:

**Correct Match: Option C (Coordination Isomerism)**