Question

historical understandings quick check
which observation by ernest rutherford and his students refuted the plum pudding model? (1 point)
alpha particle deflection
alpha particle attraction
electron attraction
electron deflection

Explanation:

Rutherford's gold - foil experiment involved firing alpha particles at a thin gold foil. The plum - pudding model predicted that the alpha particles would pass straight through or be slightly deflected. However, the significant deflection of alpha particles in the experiment showed that the positive charge was concentrated in a small nucleus, refuting the plum - pudding model.

Answer:

alpha particle deflection