How did Rutherford's gold foil experiment show that Thomson's plum pudding model of the atom was incorrect?

He blasted alpha rays at the gold foils. The Alpha rays are charged positive. When he blasted them the protons deflected and changed the course of them and the electrons surrounding the atom let them through. In the plum pudding model they were supposed to be sprinkled on which was clearly wrong according to that experiment.

Explanation:

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.