Both under fission and nuclear fusion release enormus energy. When a uranium nucleus fission, the released energy is mainly kinetic energy of the repelling ragments. When a pair of hydrogen isotopes fues, the energy initially released is in the form of

Options

A. Gamma radiation
B. Kinetic energy of colliding particles
C. Potential energy of the helium nucleus that is formed
D. Heat

Answer

To solve the question regarding the energy released during the fusion of hydrogen isotopes, we can break down the process step by step.

### Step-by-Step Solution:

1. **Understanding Fusion**:
- Nuclear fusion is the process where two light atomic nuclei combine to form a heavier nucleus, releasing energy in the process. In this case, we are considering the fusion of hydrogen isotopes, such as deuterium and tritium.

2. **Energy Release in Fusion**:
- During the fusion of hydrogen isotopes, energy is released due to the conversion of mass into energy, as described by Einstein's equation \(E=mc^2\). This energy is released in different forms.

3. **Forms of Energy Released**:
- The energy released during fusion primarily manifests in two forms:
- **Kinetic Energy**: This is the energy of the particles that are produced as a result of the fusion reaction. The newly formed nucleus and any other particles (like neutrons) are propelled away from the reaction site, gaining kinetic energy.
- **Gamma Radiation**: In addition to kinetic energy, a significant amount of energy is released in the form of gamma radiation, which is high-energy electromagnetic radiation.

4. **Identifying the Correct Answer**:
- The question asks for the form of energy released when hydrogen isotopes fuse. Based on our understanding, the energy is released mainly as:
- Gamma radiation
- Kinetic energy of the colliding particles

5. **Conclusion**:
- Therefore, the correct answer to the question is that when a pair of hydrogen isotopes fuses, the energy is released primarily in the form of gamma radiation and kinetic energy of the colliding particles.

### Final Answer:
The energy released during the fusion of hydrogen isotopes is mainly in the form of **gamma radiation** and **kinetic energy of the colliding particles**.

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