The reaction
`._(1)D^(2) + ._(1)T^(3) rarr ._(1)He^(2) + ._(0)n^(1)`
is an example of

Options

A. Nuclear fission
B. Nuclear fusion
C. Artifical radioactivity
D. Radioactive disintegration

Answer

To determine the type of reaction represented by the equation:

\[ \text{D}^2 + \text{T}^3 \rightarrow \text{He}^2 + \text{n}^1 \]

we can analyze the components and the nature of the reaction step by step.

### Step 1: Identify the Reactants and Products
- The reactants are deuterium (D) with an atomic mass of 2 and tritium (T) with an atomic mass of 3.
- The products are helium (He) with an atomic mass of 4 and a neutron (n) with an atomic mass of 1.

### Step 2: Determine the Type of Reaction
- In this reaction, two light nuclei (deuterium and tritium) are combining to form a heavier nucleus (helium) and a neutron.
- This process is characteristic of nuclear fusion, where smaller nuclei fuse together to form a larger nucleus, releasing energy in the process.

### Step 3: Eliminate Other Options
- **Nuclear Fission**: This involves the splitting of a heavy nucleus into smaller nuclei, which is not the case here.
- **Artificial Radioactivity**: This involves bombarding stable nuclei with neutrons to create radioactive isotopes, which does not apply to this reaction.
- **Radioactive Disintegration**: This refers to the decay of unstable nuclei, which is also not relevant to the given reaction.

### Conclusion
Based on the analysis, the reaction is an example of **nuclear fusion**.

### Final Answer
The reaction \( \text{D}^2 + \text{T}^3 \rightarrow \text{He}^2 + \text{n}^1 \) is an example of **nuclear fusion**.

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