Which statement best supports Rutherford's idea that an atom's positive charge is concentrated in a small core at its center?

A. Samples of uranium ore emit particles that produce images on photographic film.
B. Electrical and magnetic fields deflect cathode rays in mathematically predictable ways.
C. Atoms are neither created nor destroyed in any chemical reaction.
D. Alpha particles passing through a thin sheet of gold foil are scattered in all directions.

Question

26-07-2024
Physics

Answered

Which statement best supports Rutherford's idea that an atom's positive charge is concentrated in a small core at its center?

A. Samples of uranium ore emit particles that produce images on photographic film.
B. Electrical and magnetic fields deflect cathode rays in mathematically predictable ways.
C. Atoms are neither created nor destroyed in any chemical reaction.
D. Alpha particles passing through a thin sheet of gold foil are scattered in all directions.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-26T01:39:57-04:00

Final answer:

Rutherford's idea that an atom's positive charge is concentrated in a small core at its center is best supported by the scattering of alpha particles in his gold foil experiment.

Explanation:

Rutherford's idea that an atom's positive charge is concentrated in a small core at its center is best supported by the fact that during his gold foil experiment, alpha particles passing through a thin sheet of gold foil were scattered in all directions, indicating that most of the mass and positive charge of an atom are located in its nucleus.

This evidence contradicted the prevailing plum pudding model, which suggested a more uniform distribution of positive charge within the atom. The concentration of positive charge in a small nucleus explained the observed deflections of alpha particles at large angles in a way that the plum pudding model could not.

Learn more about Rutherford's atomic model and the gold foil experiment here:

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