Average angle of deflection of α-particles by a thin gold foil p...
Explanation:
Thomson's Model:
- Thomson's model of the atom proposed that the atom was a sphere of positive charge with negatively charged electrons embedded throughout.
- According to Thomson's model, the positive charge and negative electrons were uniformly distributed throughout the atom, leading to minimal deflection of alpha particles passing through a thin gold foil.
Rutherford's Model:
- Rutherford's model of the atom suggested that the atom had a small, dense, positively charged nucleus at its center, with electrons orbiting around it.
- Rutherford's model predicted that alpha particles would experience significant deflection when they came close to the positive nucleus, leading to the discovery of the nucleus.
Comparison:
- The average angle of deflection of alpha particles by a thin gold foil predicted by Thomson's model is about the same as predicted by Rutherford's model.
- Both models provide different explanations for the behavior of alpha particles passing through a thin gold foil, with Thomson's model focusing on uniform distribution of charge and minimal deflection, while Rutherford's model emphasizes significant deflection due to the dense nucleus.
Therefore, the correct answer is option 'A' - about the same as predicted by Rutherford's model.
Average angle of deflection of α-particles by a thin gold foil p...
The average angle of deflection of α-particles by a thin gold foil predicted by Thomson’s model is about the same size as predicted by Rutherford’s model. This is because the average angle was taken in both models.