The given compound [tex]\( Na + NH_3 \)[/tex] and [tex]\( Na + NH_2 O \)[/tex] is an example of:

A. allylic halide

B. vinylic halide

C. benzylic halide

D. aryl halide



Answer :

Let's analyze the given chemical reaction and determine the correct classification based on the provided compound types:

### Reaction Analysis

Given reaction:
[tex]\[ \text{Na} + \text{NH}_3 \rightarrow \text{Na} + \text{NH}_2\text{O} \][/tex]

In this reaction, we have:

1. Sodium (Na) - a metal.
2. Ammonia (NH[tex]\(_3\)[/tex]) - a simple compound consisting of nitrogen and hydrogen.
3. Sodium (Na) - still present as a metal.
4. NH[tex]\(_2\)[/tex]O - a result which doesn't fit neatly into the common categories involving organic molecules with halogens.

### Halides Overview

The options provided refer to different types of halides:

1. Allylic Halide - This involves a halogen attached to a carbon atom that is adjacent to a double bond (C=C).
2. Vinylic Halide - This involves a halogen attached directly to a carbon-carbon double bond.
3. Benzylic Halide - This involves a halogen attached to a carbon atom that is directly bonded to a benzene ring.
4. Aryl Halide - This involves a halogen attached directly to a benzene ring.

### Evaluation of the Reaction

Based on the reaction:

- There is no halogen (F, Cl, Br, I) involved in the starting materials (Na and NH[tex]\(_3\)[/tex]) or the product (Na and NH[tex]\(_2\)[/tex]O).
- The compounds involved (Na, NH[tex]\(_3\)[/tex], and NH[tex]\(_2\)[/tex]O) do not contain halogens and thus do not fit any of the conventional categories for halides.

Given the above points, none of the provided options correctly classify the reaction or the compounds involved.

### Conclusion

Since the provided compounds in the reaction do not include any halogen elements and thus do not fit into any of the halide categories (allylic, vinylic, benzylic, or aryl halide), the correct answer is:

None of the provided options apply directly to the given reaction.

Therefore, the answer is not listed among the given choices.