Which of the following will undergo periodic oxidation?

Options

A. a.
B. b.
C. c.
D. d.Glyoxal

Explanation

To determine which of the given compounds will undergo periodic oxidation, we need to identify the presence of a trans-diol structure in the options provided. Periodic oxidation specifically targets trans-diol compounds, converting them into carbonyl compounds.

### Step-by-Step Solution:

1. **Understanding Periodic Oxidation**:
- Periodic oxidation involves the use of periodic acid (HIO4) to oxidize trans-diol compounds into carbonyl compounds.

2. **Identifying Diols**:
- Diols are organic compounds that contain two hydroxyl (OH) groups attached to adjacent carbon atoms. For periodic oxidation to occur, these OH groups must be in a trans configuration (opposite sides).

3. **Analyzing the Options**:
- We need to evaluate each option to check if it contains a diol and if that diol is in the trans configuration.

4. **Option A**:
- If the OH groups in this option are on the same side (cis-diol), it cannot undergo periodic oxidation.

5. **Option B**:
- If the OH groups are on opposite sides (trans-diol), this compound can undergo periodic oxidation.

6. **Option C**:
- If this compound is a di-aldehyde or di-carbonyl compound, it cannot undergo periodic oxidation since it does not have the required diol structure.

7. **Option D**:
- Similar to option C, if this is a di-aldehyde or di-carbonyl compound, it cannot undergo periodic oxidation.

8. **Conclusion**:
- After evaluating all options, the only compound that meets the criteria for periodic oxidation is option B, which contains a trans-diol.

### Final Answer:
- The compound that will undergo periodic oxidation is **Option B**.