Question

Which observation by Ernest Rutherford and his students refuted the plum pudding model?
(1 point)
alpha particle deflection
electron deflection
alpha particle attraction
electron attraction

Answer 1

The observation by Ernest Rutherford and his students that refuted the plum pudding model was **alpha particle deflection**. In their gold foil experiment, they found that some alpha particles were deflected at large angles, leading them to conclude that the atom has a small, dense nucleus, contrary to the uniform distribution of positive charge suggested by the plum pudding model.