Which experimental result led to the inference that atoms have a dense,
positive center?

A. A few alpha particles bounced off a thin sheet of gold foil.

B. Most alpha particles passed straight through a thin sheet of gold
foil.

C. The beam in a cathode ray tube was moved by a magnetic force.

D. The beam in a cathode ray tube was moved by an electric force.

The correct option for the given question about Rutherford Gold Foil Experiment is Option A) "A few alpha particles bounced off a thin sheet of gold foil".

What caused Rutherford's gold-foil experiment's alpha particles to bounce off?

Rutherford predicted that the particles will pierce the foil without any resistance. But he discovered that as the particle bounced off through the foil, its course would change or be deflected. Like charges repel one another, which is the reason behind this.

Thus we can conclude that Rutherford Gold Foil Experiment (A few alpha particles bounced off a thin sheet of gold foil) results led to the inference that atoms have a dense positive centre.

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