Peoxy linkage is present in

Options

A. `CrO_(5)`
B. Caros' acid
C. Marshall's acid
D. Pernitric acid

Answer

To determine which compounds contain a peroxy linkage, we need to understand what a peroxy linkage is. A peroxy linkage is characterized by an oxygen-oxygen single bond (O-O). Let's analyze the given compounds step by step.

### Step 1: Identify the structure of CrO5
- **Explanation**: CrO5 (chromium pentoxide) has a unique structure often described as a "butterfly" shape. In this structure, there are two oxygen atoms connected by a single bond (O-O), which indicates the presence of a peroxy linkage.
- **Conclusion**: CrO5 contains a peroxy linkage.

### Step 2: Identify the structure of Carose acid
- **Explanation**: Carose acid is another compound that can be analyzed for the presence of a peroxy linkage. By examining its molecular structure, we can identify if there is an O-O bond.
- **Conclusion**: Carose acid also contains a peroxy linkage.

### Step 3: Identify the structure of Marshalls acid
- **Explanation**: Marshalls acid needs to be evaluated similarly. We look for the O-O bond in its structure.
- **Conclusion**: Marshalls acid contains a peroxy linkage.

### Step 4: Identify the structure of Per nitric acid
- **Explanation**: Finally, we check Per nitric acid (HNO4). By analyzing its structure, we can determine if it has a peroxy linkage.
- **Conclusion**: Per nitric acid contains a peroxy linkage.

### Final Conclusion
After analyzing all the compounds:
- CrO5, Carose acid, Marshalls acid, and Per nitric acid all contain a peroxy linkage.