Beta rays emitted by a radicactive material are

Options

A. electromagnetic radiations
B. the electrons orbiting around the nucleus
C. charged particles emitted by the nucleus
D. neutral particles

Explanation

To solve the question regarding the nature of beta rays emitted by a radioactive material, we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Beta Rays**:
- Beta rays are a type of radiation emitted during the radioactive decay of certain isotopes. They can be classified into two types: beta-minus (β-) and beta-plus (β+).

2. **Analyzing the Options**:
- **Option 1: Electromagnetic Radiation**
- Electromagnetic radiation includes gamma rays, X-rays, and visible light. Beta rays are not electromagnetic radiation; they are charged particles. Therefore, this option is incorrect.

- **Option 2: Electrons Orbiting Around the Nucleus**
- Electrons that orbit the nucleus are part of the atomic structure and do not constitute beta radiation. Beta rays are emitted from the nucleus during radioactive decay, not from the electrons in orbit. Thus, this option is also incorrect.

- **Option 3: Charged Particles Emitted by the Nucleus**
- Beta rays are indeed charged particles emitted from the nucleus during beta decay. In beta-minus decay, an electron (with a charge of -1) is emitted, while in beta-plus decay, a positron (with a charge of +1) is emitted. This aligns with the definition of beta rays, making this option correct.

- **Option 4: Neutral Particles**
- Neutral particles, such as neutrons, do not emit beta rays. Beta rays are specifically charged particles, so this option is incorrect.

3. **Conclusion**:
- Based on the analysis of the options, the correct answer is that beta rays are "charged particles emitted by the nucleus."

### Final Answer:
Beta rays emitted by a radioactive material are charged particles emitted by the nucleus.

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