Which of the following experimental approaches was used by scientists to discover that the atomic nucleus held most of the atom's mass and a positive charge:
W) directing alpha particles at thin metal strips
X) finding the amount of magnetic deflection in cathode rays within a well-evacuated tube
Y) exposing photographic film to certain radium salts
Z) using a crude cyclotron to disintegrate large nuclei
✔️Answer:W) DIRECTING ALPHA PARTICLES AT THIN METAL STRIPS
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