Some radioactive nucleus may emit.

Options

A. All the three `alpha,beta` and `gamma` simultaneously
B. Only `alpha` and `beta` simultaneously
C. All the three `alpha,beta and gamma` one after another
D. `gamma` along with `alpha` or `beta` particles

Answer

To solve the question regarding the emissions from radioactive nuclei, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Radioactive Emission**:
- Radioactive nuclei can emit different types of particles during their decay process. The common types of emissions are alpha particles (α), beta particles (β), and gamma rays (γ).

2. **Types of Emissions**:
- **Alpha Emission**: This occurs when a nucleus emits an alpha particle, which consists of 2 protons and 2 neutrons (essentially a helium nucleus).
- **Beta Emission**: This occurs when a nucleus emits a beta particle, which can be either an electron (β-) or a positron (β+).
- **Gamma Emission**: Gamma rays are high-energy electromagnetic radiation emitted from the nucleus, often accompanying alpha or beta decay.

3. **Emission Patterns**:
- Some radioactive nuclei may emit only alpha particles, while others may emit only beta particles.
- It is important to note that gamma radiation is often emitted simultaneously with either alpha or beta decay, but it does not occur in isolation.

4. **Simultaneous Emission**:
- There is no specific sequence where alpha particles must be emitted first, followed by beta particles, and then gamma rays. Instead, alpha or beta emissions can occur independently, with gamma radiation being emitted at the same time.

5. **Conclusion**:
- Based on the understanding of radioactive emissions, the correct answer to the question "Some radioactive nucleus may emit" is that they can emit gamma rays along with either alpha or beta particles. Therefore, the correct option is gamma along with alpha or beta particles.

### Final Answer:
Some radioactive nuclei may emit gamma rays along with alpha or beta particles.

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