Question

who discovered the
proton ​

Answer 1

Answer:

Proton was discovered by Goldstein.

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Answer 2

Answer:

goldstein discovered positively charged particles in an atom but not considered it as protons.

later Ernest Rutherford carried out his gold foil experiment and prove the existence of proton

can I tell you an interesting fact:

even after having complete knowledge of quantum physics and quantum mechanics we are not 100% aware of properties of an atom !