In Rutherford's experiment α particles aimed directly at the nuclei of gold atoms were deflected by the greatest angle.

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This is a true statement. Rutherford's experiment showed that most α particles passed straight through the gold atoms, but some were deflected at large angles, indicating the presence of a concentrated positive charge (i.e. the nucleus) in the center of the atom.

In Rutherford's Experiment α Particles Aimed Directly at the Nuclei