Rutherford's `alpha`particle dispersion experiment concludes that

Options

A. All positive ions are deposited at small part
B. All negative ions are deposited at small part
C. Proton moves around the electron
D. Neutrons are charged particles

Answer

To solve the question regarding Rutherford's alpha particle dispersion experiment, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Experiment**: Rutherford conducted an experiment where he directed alpha particles at a thin foil of gold. He observed how these particles scattered after hitting the foil.

2. **Analyze the Results**: The majority of the alpha particles passed through the foil with little to no deflection, while a small fraction were deflected at large angles, and some even bounced back.

3. **Draw Conclusions**: From these observations, Rutherford concluded that:
- Atoms are mostly empty space since most alpha particles passed through without deflection.
- There is a small, dense, positively charged center in the atom (which he called the nucleus) that caused the deflections of some alpha particles.

4. **Final Conclusion**: The conclusion of Rutherford's experiment is that all positive charge in an atom is concentrated in a small part of the atom, specifically in the nucleus.

5. **Select the Correct Option**: Based on the conclusion, we can identify the correct option from the given choices that states that all positive charge is concentrated in a small part (the nucleus) of the atom.

### Final Answer:
The correct conclusion from Rutherford's alpha particle dispersion experiment is that all positive charge inside an atom is concentrated in a small part, specifically in the nucleus.

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