In which of the following property hydrogen does not resemble with halogen:

Options

A. Hydrogen has strong affinity for non-metals
B. Hydrogen has high ionisation potential
C. Hydrogen has low value of electron affinity
D. Hydrogen acts as reducing agent

Answer

To determine in which property hydrogen does not resemble halogens, we can analyze the properties given in the question step by step.

### Step-by-Step Solution:

1. **Understanding the Properties**: We need to evaluate the properties of hydrogen and halogens to find the one where they differ significantly.

2. **Neutral Oxides**:
- Hydrogen forms water (H₂O), which is a neutral oxide.
- Halogens, on the other hand, form acidic oxides (e.g., Cl₂O, Br₂O), which are acidic in nature.
- **Conclusion**: This property shows a difference between hydrogen and halogens.

3. **Electropositivity vs. Electronegative Character**:
- Hydrogen can exhibit an electropositive character (it can lose an electron to form H⁺).
- Halogens are highly electronegative and tend to gain electrons.
- **Conclusion**: This property shows a difference between hydrogen and halogens.

4. **Electron Affinity**:
- Hydrogen has a smaller electron affinity compared to halogens, which have high electron affinities.
- **Conclusion**: This property shows a difference between hydrogen and halogens.

5. **Formation of Hydride Anions**:
- Hydrogen can form hydride ions (H⁻) and is sometimes placed above halogens in the periodic table due to this property.
- **Conclusion**: This property shows a similarity between hydrogen and halogens.

6. **Dihydrogen Formation**:
- Hydrogen exists as diatomic molecules (H₂), similar to halogens which also exist as diatomic molecules (e.g., Cl₂, Br₂).
- **Conclusion**: This property shows a similarity between hydrogen and halogens.

7. **Ionization Potential**:
- Hydrogen has a high ionization potential value compared to halogens.
- **Conclusion**: This property shows a difference between hydrogen and halogens.

### Final Answer:
Based on the analysis, hydrogen does not resemble halogens in the properties of forming neutral oxides, exhibiting electropositive character, having smaller electron affinity, and having high ionization potential. Therefore, the properties where hydrogen does not resemble halogens are **neutral oxides, electropositive character, and electron affinity**.