Who discovered the nucleus?

Options

A. Thomson
B. Bohr
C. Rutherford
D. de Broglie

Answer

To answer the question "Who discovered the nucleus?" we can follow these steps:

### Step 1: Understand the context of the question
The question is asking about the historical discovery of the nucleus within the atom.

### Step 2: Review the contributions of key scientists
1. **Thomson**: He proposed the "plum pudding model" of the atom, which included electrons but did not identify a nucleus.
2. **Bohr**: He developed a model of the atom where electrons orbit a central nucleus, but he did not discover the nucleus itself.
3. **Rutherford**: He conducted the famous gold foil experiment, which led to the discovery of the nucleus.
4. **de Broglie**: He is known for his work on wave-particle duality, not for the discovery of the nucleus.

### Step 3: Identify the correct answer
From the review, it is clear that **Rutherford** is the scientist who discovered the nucleus through his experiments.

### Conclusion
The nucleus of the atom was discovered by **Ernest Rutherford**.

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