Question

which discovery did point out that an atom has internal structure?​

Answer 1

Answer:

Rutherford's Gold Foil Experiment proved the existance of a small massive center to atoms, which would later be known as the nucleus of an atom.

Answer 2

Explanation:

Rutherford's Gold Foil Experiment proved the existance of a small massive center to atoms, which would later be known as the nucleus of an atom.