Which of the following compound is expected to be most reactive?

Options

A. Ethane
B. Ethene
C. Propane
D. Hexane

Explanation

To determine which of the given compounds is expected to be the most reactive, we need to analyze the reactivity of each compound based on their structure and bonding.

### Step-by-Step Solution:

1. **Identify the Compounds**: The compounds given are ethylene, propane, and hexane.

2. **Understand the Nature of Alkanes**:
- Alkanes (like propane and hexane) are saturated hydrocarbons with single bonds (C-C).
- They have a complete valence shell, making them relatively stable and less reactive.

3. **Analyze Ethylene**:
- Ethylene (C2H4) is an alkene, which means it contains a double bond (C=C).
- The presence of a double bond introduces a pi bond, which is weaker than a sigma bond. This pi bond can easily be broken, making ethylene more reactive than alkanes.

4. **Compare Reactivity**:
- **Propane**: As an alkane, it is less reactive due to its stable single bonds.
- **Hexane**: Similar to propane, hexane is also an alkane and exhibits low reactivity.
- **Ethylene**: The presence of the double bond in ethylene makes it more reactive compared to propane and hexane.

5. **Conclusion**:
- Since ethylene has a double bond that can easily participate in addition reactions, it is expected to be the most reactive compound among the options provided.

### Final Answer:
**Ethylene is expected to be the most reactive compound.**

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