In Wurtz reaction the reagent used is

Options

A. Na
B. Na/liq. `NH_(3)`
C. Na/dry ether
D. Na/dry. Alcohol

Explanation

**Step-by-step Solution:**

1. **Understanding Wurtz Reaction**: The Wurtz reaction is a coupling reaction that involves the reaction of alkyl halides with sodium metal to form alkanes. It is primarily used to synthesize higher alkanes from alkyl halides.

2. **Identifying the Reagents**: The main reagents used in the Wurtz reaction are:
- Alkyl halide (R-X, where R is an alkyl group and X is a halogen)
- Sodium metal (Na)
- Dry ether (as a solvent)

3. **Reaction Mechanism**: In the Wurtz reaction, two moles of alkyl halide react with sodium in the presence of dry ether. The sodium reduces the alkyl halide, leading to the formation of an alkane:
- The general reaction can be represented as:
\[ 2 R-X + 2 Na \xrightarrow{\text{dry ether}} R-R + 2 NaX \]
- Here, R-R is the newly formed alkane, and NaX is the sodium halide byproduct.

4. **Conclusion**: Therefore, the reagent used in the Wurtz reaction is sodium in the presence of dry ether.

5. **Final Answer**: The correct answer is sodium in the presence of dry ether.

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