According to classical theory, Rutherfor'd atom model is

Options

A. Electrostatically stable
B. Electrostatically unstable
C. semi stable
D. Stable

Answer

**Step-by-Step Solution:**

1. **Understanding Rutherford's Atomic Model:**
- Rutherford proposed that atoms consist of a small, dense nucleus surrounded by electrons that revolve around it, similar to how planets orbit the sun.

2. **Classical Theory of Electromagnetism:**
- According to classical electromagnetic theory, when a charged particle (like an electron) accelerates, it emits electromagnetic radiation. This radiation carries energy away from the particle.

3. **Energy Loss in Electrons:**
- In Rutherford's model, the electrons are in circular orbits around the nucleus. As they revolve, they are considered to be accelerating (changing direction), which means they should be losing energy due to radiation.

4. **Consequences of Energy Loss:**
- As the electrons lose energy, they would spiral inward towards the nucleus because their orbital radius would decrease. This process would continue until the electrons eventually collapse into the nucleus.

5. **Conclusion on Stability:**
- Since the electrons cannot maintain a stable orbit and will eventually fall into the nucleus, the Rutherford atomic model does not provide a stable configuration for atoms. Therefore, according to classical theory, the Rutherford atomic model is considered electrostatically unstable.

6. **Final Answer:**
- The correct option is: **Electrostatically unstable (Option 2)**.

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