Question

Which observation by Ernest Rutherford and his students refuted the plum pudding model?(1 point)
Responses

electron attraction
electron attraction

alpha particle attraction
alpha particle attraction

alpha particle deflection
alpha particle deflection

electron deflection

Answer 1

The observation by Ernest Rutherford and his students that refuted the plum pudding model was **alpha particle deflection**. This was demonstrated in Rutherford's gold foil experiment, where most alpha particles passed through the foil, but a small number were deflected at large angles, indicating that the atom has a small, dense nucleus rather than being a diffuse cloud of positive charge as suggested by the plum pudding model.