Ernest Rutherford’s famous alpha-particle scattering experiment, using a thin go

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1. Ernest Rutherford’s famous alpha-particle scattering experiment, using a thin gold foil, revealed the presence of a?

Cloud of electrons throughout the atom

Diffuse, positively charged region

Small, dense, positively charged nucleus at the atom’s centre

Set of isotopes within the gold sample

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Most alpha particles passed straight through the gold foil, but a few bounced back sharply — evidence that an atom’s positive charge and mass are concentrated in a tiny, dense central nucleus.