The size of the nucleus is very small as compared to the size of atoms. We can calculate this size using

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Rutherford’s Experiment

Bohr’s Experiment

None of the above

Thomson’s Experiment

answer is A.

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Detailed Solution

The size of the nucleus is very small as compared to the size of atoms. We can calculate this size using Rutherford’s experiment.
Rutherford observed that when α- particles were bombarded on a very thin foil, a small portion of it bounced back. But the number of α- particles bouncing back doubled when he doubled the thickness of the gold foil. Then he concluded that the area of the nucleus is very small in comparison to the total area of the atom.
The protons and neutrons in the nucleus feel a strong nuclear force. Since this force is much stronger than the electrostatic repulsion between the protons, atomic nuclei are very tiny.

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