Question

Which contribution added to Rutherford's discovery of a positive nucleus?

Answer 1

Your answer is: C. Neutrons are inside the nucleus of a atom

Answer 2

C : " Neutrons are inside the nucleus of an atom" is the answer because, Rutherford  theorized if the neutrons were in the center and the electrons were orbiting in separate energy levels the protons would be in the nucleus to keep the neutrons from floating. If the nucleus has neutral and positive particles, then it will be positive nucleus. Hope this helps